Fatto generale: 21435 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 21435 is a boring number.
Trivia: 21435 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 7th is the day in 1936 that the last surviving member of the thylacine species, Benjamin, dies alone in her cage at the Hobart Zoo in Tasmania.