general_fact: 2842 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 2842 is the smallest number with the property that its first 4 multiples contain the digit 8.
trivia: 2842 is a boring number.
historical_date: October 12th is the day in 1964 that the Soviet Union launches the Voskhod 1 into Earth orbit as the first spacecraft with a multi-person crew and the first flight without space suits.