Fait général: 4124 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4124 is the number of binary partitions of 40.
Culture générale: 4124 is an unremarkable number.
Date historique: April 16th is the day in 1945 that the United States Army liberates Nazi Sonderlager (high security) prisoner-of-war camp Oflag IV-C (better known as Colditz).