921242955 has 32 divisors (see below), whose sum is σ = 1487419200. Its totient is φ = 486876672.

The previous prime is 921242941. The next prime is 921243019. The reversal of 921242955 is 559242129.

It is not a de Polignac number, because 921242955 - 2⁴ = 921242939 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 923517 + ... + 924513.

It is an arithmetic number, because the mean of its divisors is an integer number (46481850).

Almost surely, 2^921242955 is an apocalyptic number.

921242955 is a deficient number, since it is larger than the sum of its proper divisors (566176245).

921242955 is a wasteful number, since it uses less digits than its factorization.

921242955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503.

The product of its digits is 64800, while the sum is 39.

The square root of 921242955 is about 30351.9843667593. The cubic root of 921242955 is about 973.0266306162.

The spelling of 921242955 in words is "nine hundred twenty-one million, two hundred forty-two thousand, nine hundred fifty-five".