Fatto matematico: 8742 is an uninteresting number.
Trivia: 8742 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: December 7th is the day in 1724 that Tumult of Thorn – religious unrest is followed by the execution of nine Protestant citizens and the mayor of Thorn (Toruń) by Polish authorities.