Fait général: 1427 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1427 is the number of ways to write 23 as the ordered sum of positive squares.
Culture générale: 1427 is an unremarkable number.
Date historique: November 27th is the day in 1989 that Avianca Flight 203, a Boeing 727, explodes in mid-air over Colombia, killing all 107 people on board and three people on the ground.