Hecho general: 12400 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 12400 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 12400 is an unremarkable number.
Fecha histórica: December 12th is the day in 1979 that the unrecognised state of Zimbabwe Rhodesia returns to British control and resumes using the name Southern Rhodesia.