Fatto generale: 41978 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 41978 is an uninteresting number.
Trivia: 41978 is an unremarkable number.
Data storica: December 6th is the day in 2008 that the 2008 Greek riots break out upon the killing of a 15-year-old boy, Alexandros Grigoropoulos, by a police officer.