Fait général: 4071 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4071 is the number of ways to color the vertices of a triangle with 23 colors, up to rotation.
Culture générale: 4071 is an unremarkable number.
Date historique: February 22nd is the day in 1972 that the Official Irish Republican Army detonates a car bomb at Aldershot barracks, killing seven and injuring nineteen others.