120439931 has 2 divisors, whose sum is σ = 120439932. Its totient is φ = 120439930.

The previous prime is 120439901. The next prime is 120439981. The reversal of 120439931 is 139934021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120439931 - 2¹⁴ = 120423547 is a prime.

It is a super-2 number, since 2×120439931² = 29011553958569522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120439901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60219965 + 60219966.

It is an arithmetic number, because the mean of its divisors is an integer number (60219966).

Almost surely, 2^120439931 is an apocalyptic number.

120439931 is a deficient number, since it is larger than the sum of its proper divisors (1).

120439931 is an equidigital number, since it uses as much as digits as its factorization.

120439931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 120439931 is about 10974.5127910081. The cubic root of 120439931 is about 493.8444370771.

The spelling of 120439931 in words is "one hundred twenty million, four hundred thirty-nine thousand, nine hundred thirty-one".