392071842 has 12 divisors (see below), whose sum is σ = 849489030. Its totient is φ = 130690608.

The previous prime is 392071837. The next prime is 392071843. The reversal of 392071842 is 248170293.

It can be written as a sum of positive squares in only one way, i.e., 255392361 + 136679481 = 15981^2 + 11691^2 .

It is a junction number, because it is equal to n+sod(n) for n = 392071797 and 392071806.

It is not an unprimeable number, because it can be changed into a prime (392071843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10890867 + ... + 10890902.

Almost surely, 2^392071842 is an apocalyptic number.

392071842 is an abundant number, since it is smaller than the sum of its proper divisors (457417188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

392071842 is a wasteful number, since it uses less digits than its factorization.

392071842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21781777 (or 21781774 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 392071842 is about 19800.8040745824. The cubic root of 392071842 is about 731.9058487703.

The spelling of 392071842 in words is "three hundred ninety-two million, seventy-one thousand, eight hundred forty-two".