general_fact: 45972 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 45972 is a boring number.
trivia: 45972 is an unremarkable number.
historical_date: November 12th is the day in 1996 that a Saudi Arabian Airlines Boeing 747 and a Kazakh Ilyushin Il-76 cargo plane collide in mid-air near New Delhi, killing 349.