Fait général: 60421 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 60421 is an unremarkable number.
Culture générale: 60421 is an unremarkable number.
Date historique: June 4th is the day in 1896 that Henry Ford completes the Ford Quadricycle, his first gasoline-powered automobile, and gives it a successful test run.