It's about 650 times as heavy as a Basketball
In other words, 420 kilograms is 673.412000860 times the weight of a Basketball, and the weight of a Basketball is 0.0014849750208 times that amount.(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 0.623689508750 kilograms. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about 1,000 times as heavy as a Football (Soccer)
In other words, 420 kilograms is 980 times the weight of a Football (Soccer), and the weight of a Football (Soccer) is 0.001 times that amount.(a.k.a. Soccer, a.k.a. Association Football) (FIFA Law 2 specification)
According to FIFA's Law of the Game number 2, a football must weigh between 0.410 kilograms and 0.450 kilograms. An artifact on display at the Smith Art Gallery in Museum in Stirling, Scotland is said to be the world's oldest football and is about one-third to one-half the size of a modern football.
It's about 1,000 times as heavy as a Football (American)
In other words, 420 kilograms is 1,021.7285530220 times the weight of a Football (American), and the weight of a Football (American) is 0.0009787335364587 times that amount.(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.396893323750 kilograms and 0.4252428468750 kilograms. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.
It's about 1,000 times as heavy as a Can of Soup
In other words, 420 kilograms is 1,200 times the weight of a Can of Soup, and the weight of a Can of Soup is 0.00083 times that amount.(for Campbell''s Condensed Tomato Soup, 317.9 ml)
A can of Campbell''s Tomato Soup weighs 0.350 kilograms. Cans have been used to store soup and other foods since their invention in 1913, but a dedicated can opener was not developed until cans began to use thinner materials — prior to that time, cans were usually opened using various blunt instruments and tools.
It's about 1,500 times as heavy as a Human Heart
It's about one-one-thousand-five-hundredth as heavy as Christ the Redeemer (statue)
In other words, 420 kilograms is 0.000661 times the weight of Christ the Redeemer (statue), and the weight of Christ the Redeemer (statue) is 1,510 times that amount.(a.k.a. O Cristo Redentor, a.k.a. Christo redemptor) (Rio de Janeiro, Brazil)
Christ the Redeemer weighs 635,000 kilograms. The statue overlooks the city of Rio de Janeiro from atop the 709.9-meter (2,329 ft) granite peak in the Tijuca Forest National Park.
It's about 2,000 times as heavy as a Hamster
In other words, the weight of a Hamster is 0.0005 times 420 kilograms.(for Syrian hamster, a.k.a. golden hamster, a.k.a. Mesocricetus auratus; adult)
An adult Syrian hamster has a typical weight of about 0.20 kilograms. Known for transporting food in the pouches of their cheeks so that they can bury it later, some hamsters can store up to 25 kg of food in their borrows.