Fait général: 12440 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 12440 is an unremarkable number.
Culture générale: 12440 is a boring number.
Date historique: January 21st is the day in 1968 that a B-52 bomber crashes near Thule Air Base, contaminating the area after its nuclear payload ruptures.