factorion

A number that is equal to the sum of the factorials of its digits.

Noun

  1. A number that is equal to the sum of the factorials of its digits.
    • 145 is a factorion because 1! + 4! + 5! = 1 + 24 + 120 = 145.

Origin

From factorial + -on, coined by Clifford A. Pickover.

Forms

factorions