142322931 has 24 divisors (see below), whose sum is σ = 212319744. Its totient is φ = 91808640.

The previous prime is 142322899. The next prime is 142322933. The reversal of 142322931 is 139223241.

It is a happy number.

It is not a de Polignac number, because 142322931 - 2⁵ = 142322899 is a prime.

It is a super-2 number, since 2×142322931² = 40511633376861522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142322895 and 142322904.

It is not an unprimeable number, because it can be changed into a prime (142322933) 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 in 23 ways as a sum of consecutive naturals, for example, 45345 + ... + 48381.

It is an arithmetic number, because the mean of its divisors is an integer number (8846656).

Almost surely, 2^142322931 is an apocalyptic number.

142322931 is a deficient number, since it is larger than the sum of its proper divisors (69996813).

142322931 is a wasteful number, since it uses less digits than its factorization.

142322931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211 (or 3208 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 142322931 is about 11929.9174766634. The cubic root of 142322931 is about 522.1055298158.

The spelling of 142322931 in words is "one hundred forty-two million, three hundred twenty-two thousand, nine hundred thirty-one".