42236931 has 8 divisors (see below), whose sum is σ = 61435584. Its totient is φ = 25598120.

The previous prime is 42236927. The next prime is 42236933. The reversal of 42236931 is 13963224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42236931 - 2² = 42236927 is a prime.

It is a super-2 number, since 2×42236931² = 3567916680597522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42236933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639921 + ... + 639986.

It is an arithmetic number, because the mean of its divisors is an integer number (7679448).

Almost surely, 2^42236931 is an apocalyptic number.

42236931 is a deficient number, since it is larger than the sum of its proper divisors (19198653).

42236931 is a wasteful number, since it uses less digits than its factorization.

42236931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279921.

The product of its digits is 7776, while the sum is 30.

The square root of 42236931 is about 6498.9946145539. The cubic root of 42236931 is about 348.2550729358.

The spelling of 42236931 in words is "forty-two million, two hundred thirty-six thousand, nine hundred thirty-one".