142724631 has 32 divisors (see below), whose sum is σ = 226828800. Its totient is φ = 78099840.

The previous prime is 142724623. The next prime is 142724633. The reversal of 142724631 is 136427241.

It is not a de Polignac number, because 142724631 - 2³ = 142724623 is a prime.

It is a super-2 number, since 2×142724631² = 40740640588172322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142724633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78885 + ... + 80673.

It is an arithmetic number, because the mean of its divisors is an integer number (7088400).

Almost surely, 2^142724631 is an apocalyptic number.

142724631 is a deficient number, since it is larger than the sum of its proper divisors (84104169).

142724631 is a wasteful number, since it uses less digits than its factorization.

142724631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959.

The product of its digits is 8064, while the sum is 30.

The square root of 142724631 is about 11946.7414385681. The cubic root of 142724631 is about 522.5962747742.

The spelling of 142724631 in words is "one hundred forty-two million, seven hundred twenty-four thousand, six hundred thirty-one".