42231951 has 24 divisors (see below), whose sum is σ = 63340160. Its totient is φ = 27086400.

The previous prime is 42231929. The next prime is 42231967. The reversal of 42231951 is 15913224.

It is not a de Polignac number, because 42231951 - 2⁵ = 42231919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63561 + ... + 64221.

Almost surely, 2^42231951 is an apocalyptic number.

42231951 is a deficient number, since it is larger than the sum of its proper divisors (21108209).

42231951 is a wasteful number, since it uses less digits than its factorization.

42231951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 924 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 42231951 is about 6498.6114670751. The cubic root of 42231951 is about 348.2413852429.

The spelling of 42231951 in words is "forty-two million, two hundred thirty-one thousand, nine hundred fifty-one".