400421505431002 has 16 divisors (see below), whose sum is σ = 655235924068224. Its totient is φ = 182009571484000.

The previous prime is 400421505430987. The next prime is 400421505431027. The reversal of 400421505431002 is 200134505124004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10886127 + ... + 30320797.

It is an arithmetic number, because the mean of its divisors is an integer number (40952245254264).

Almost surely, 2^{400421505431002} is an apocalyptic number.

400421505431002 is a deficient number, since it is larger than the sum of its proper divisors (254814418637222).

400421505431002 is a wasteful number, since it uses less digits than its factorization.

400421505431002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20371205.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 400421505431002 in words is "four hundred trillion, four hundred twenty-one billion, five hundred five million, four hundred thirty-one thousand, two".