Fatto generale: 1642 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1642 is a boring number.
Trivia: 1642 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: June 29th is the day in 1644 that Charles I of England defeats a Parliamentarian detachment at the Battle of Cropredy Bridge, the last battle won by an English King on English soil.