general_fact: 42750 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 42750 is an unremarkable number.
trivia: 42750 is a boring number.
historical_date: January 16th is the day in 1572 that Thomas Howard, 4th Duke of Norfolk is tried for treason for his part in the Ridolfi plot to restore Catholicism in England.