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 a boring number.
Date historique: April 16th is the day in 1963 that Dr. Martin Luther King, Jr. pens his Letter from Birmingham Jail while incarcerated in Birmingham, Alabama for protesting against segregation.