math_fact: 42423 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 42423 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: February 24th is the day in 1809 that London's Drury Lane Theatre burns to the ground, leaving owner Richard Brinsley Sheridan destitute.