392207121 has 12 divisors (see below), whose sum is σ = 573348048. Its totient is φ = 258320664.

The previous prime is 392207117. The next prime is 392207129. The reversal of 392207121 is 121702293.

It is not a de Polignac number, because 392207121 - 2² = 392207117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (392207129) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 261775 + ... + 263268.

It is an arithmetic number, because the mean of its divisors is an integer number (47779004).

Almost surely, 2^392207121 is an apocalyptic number.

It is an amenable number.

392207121 is a deficient number, since it is larger than the sum of its proper divisors (181140927).

392207121 is a wasteful number, since it uses less digits than its factorization.

392207121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525132 (or 525129 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 392207121 is about 19804.2197776131. The cubic root of 392207121 is about 731.9900171083.

The spelling of 392207121 in words is "three hundred ninety-two million, two hundred seven thousand, one hundred twenty-one".