392720042 has 16 divisors (see below), whose sum is σ = 692066592. Its totient is φ = 164777520.

The previous prime is 392720033. The next prime is 392720057. The reversal of 392720042 is 240027293.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 392719987 and 392720014.

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, 686288 + ... + 686859.

It is an arithmetic number, because the mean of its divisors is an integer number (43254162).

Almost surely, 2^392720042 is an apocalyptic number.

392720042 is a deficient number, since it is larger than the sum of its proper divisors (299346550).

392720042 is a wasteful number, since it uses less digits than its factorization.

392720042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373173.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 392720042 is about 19817.1653371515. The cubic root of 392720042 is about 732.3089723067.

The spelling of 392720042 in words is "three hundred ninety-two million, seven hundred twenty thousand, forty-two".