392421442 has 16 divisors (see below), whose sum is σ = 672992640. Its totient is φ = 168113088.

The previous prime is 392421437. The next prime is 392421457. The reversal of 392421442 is 244124293.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48298 + ... + 55834.

It is an arithmetic number, because the mean of its divisors is an integer number (42062040).

Almost surely, 2^392421442 is an apocalyptic number.

392421442 is a deficient number, since it is larger than the sum of its proper divisors (280571198).

392421442 is a wasteful number, since it uses less digits than its factorization.

392421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11265.

The product of its digits is 13824, while the sum is 31.

The square root of 392421442 is about 19809.6300318810. The cubic root of 392421442 is about 732.1233244494.

The spelling of 392421442 in words is "three hundred ninety-two million, four hundred twenty-one thousand, four hundred forty-two".