40,000 (forty thousand) is the natural number that comes after 39,999 and before 40,001. It is the square of 200. 40755 = the smallest number >1 to be a Triangular number, Pentagonal number, and a Hexagonal number. [2] . Additionally, it's a 390-gonal, 4077-gonal, and 13586-gonal number. [3][4][5] [12]
Your guide to the number 40000, an even composite number composed of two distinct primes. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.