120642031 has 2 divisors, whose sum is σ = 120642032. Its totient is φ = 120642030.

The previous prime is 120642023. The next prime is 120642037. The reversal of 120642031 is 130246021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120642031 - 2³ = 120642023 is a prime.

It is a super-2 number, since 2×120642031² = 29108999287609922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120642037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60321015 + 60321016.

It is an arithmetic number, because the mean of its divisors is an integer number (60321016).

Almost surely, 2^120642031 is an apocalyptic number.

120642031 is a deficient number, since it is larger than the sum of its proper divisors (1).

120642031 is an equidigital number, since it uses as much as digits as its factorization.

120642031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 120642031 is about 10983.7166296295. The cubic root of 120642031 is about 494.1205088267.

Adding to 120642031 its reverse (130246021), we get a palindrome (250888052).

The spelling of 120642031 in words is "one hundred twenty million, six hundred forty-two thousand, thirty-one".