42366931 has 2 divisors, whose sum is σ = 42366932. Its totient is φ = 42366930.

The previous prime is 42366923. The next prime is 42366949. The reversal of 42366931 is 13966324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42366931 - 2³ = 42366923 is a prime.

It is a super-2 number, since 2×42366931² = 3589913684717522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42366991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21183465 + 21183466.

It is an arithmetic number, because the mean of its divisors is an integer number (21183466).

Almost surely, 2^42366931 is an apocalyptic number.

42366931 is a deficient number, since it is larger than the sum of its proper divisors (1).

42366931 is an equidigital number, since it uses as much as digits as its factorization.

42366931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 42366931 is about 6508.9884774825. The cubic root of 42366931 is about 348.6120022020.

The spelling of 42366931 in words is "forty-two million, three hundred sixty-six thousand, nine hundred thirty-one".