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 uninteresting number.
Date historique: April 16th is the day in 73 that Masada, a Jewish fortress, falls to the Romans after several months of siege, ending the Jewish Revolt.