392517492242 has 6 divisors (see below), whose sum is σ = 588777567399. Its totient is φ = 196258303110.

The previous prime is 392517492223. The next prime is 392517492251. The reversal of 392517492242 is 242294715293.

It can be written as a sum of positive squares in only one way, i.e., 196258746121 + 196258746121 = 443011^2 + 443011^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=443011.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 664517 + ... + 1107527.

Almost surely, 2^392517492242 is an apocalyptic number.

392517492242 is a deficient number, since it is larger than the sum of its proper divisors (196260075157).

392517492242 is an frugal number, since it uses more digits than its factorization.

392517492242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886024 (or 443013 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

Multiplying 392517492242 by its sum of digits (50), we get a square (19625874612100 = 4430110²).

The spelling of 392517492242 in words is "three hundred ninety-two billion, five hundred seventeen million, four hundred ninety-two thousand, two hundred forty-two".