120442631 has 4 divisors (see below), whose sum is σ = 120853992. Its totient is φ = 120031272.

The previous prime is 120442607. The next prime is 120442633. The reversal of 120442631 is 136244021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120442631 is a prime.

It is a super-2 number, since 2×120442631² = 29012854724404322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120442597 and 120442606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120442633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205241 + ... + 205826.

It is an arithmetic number, because the mean of its divisors is an integer number (30213498).

Almost surely, 2^120442631 is an apocalyptic number.

120442631 is a deficient number, since it is larger than the sum of its proper divisors (411361).

120442631 is an equidigital number, since it uses as much as digits as its factorization.

120442631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411360.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 120442631 is about 10974.6358026132. The cubic root of 120442631 is about 493.8481273538.

Adding to 120442631 its reverse (136244021), we get a palindrome (256686652).

The spelling of 120442631 in words is "one hundred twenty million, four hundred forty-two thousand, six hundred thirty-one".