120142431 has 6 divisors (see below), whose sum is σ = 173539080. Its totient is φ = 80094948.

The previous prime is 120142427. The next prime is 120142493. The reversal of 120142431 is 134241021.

It is not a de Polignac number, because 120142431 - 2² = 120142427 is a prime.

It is a super-2 number, since 2×120142431² = 28868407453179522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120142411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6674571 + ... + 6674588.

It is an arithmetic number, because the mean of its divisors is an integer number (28923180).

Almost surely, 2^120142431 is an apocalyptic number.

120142431 is a deficient number, since it is larger than the sum of its proper divisors (53396649).

120142431 is a wasteful number, since it uses less digits than its factorization.

120142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13349165 (or 13349162 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 120142431 is about 10960.9502781465. The cubic root of 120142431 is about 493.4374849597.

Adding to 120142431 its reverse (134241021), we get a palindrome (254383452).

The spelling of 120142431 in words is "one hundred twenty million, one hundred forty-two thousand, four hundred thirty-one".