42232491 has 24 divisors (see below), whose sum is σ = 69919200. Its totient is φ = 24062976.

The previous prime is 42232481. The next prime is 42232499. The reversal of 42232491 is 19423224.

It is not a de Polignac number, because 42232491 - 2⁷ = 42232363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42232499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27541 + ... + 29033.

It is an arithmetic number, because the mean of its divisors is an integer number (2913300).

Almost surely, 2^42232491 is an apocalyptic number.

42232491 is a deficient number, since it is larger than the sum of its proper divisors (27686709).

42232491 is a wasteful number, since it uses less digits than its factorization.

42232491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1952 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 42232491 is about 6498.6530142792. The cubic root of 42232491 is about 348.2428695026.

The spelling of 42232491 in words is "forty-two million, two hundred thirty-two thousand, four hundred ninety-one".