Fait général: 81542 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 81542 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 81542 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: April 3rd is the day in 1975 that Bobby Fischer refuses to play in a chess match against Anatoly Karpov, giving Karpov the title of World Champion by default.