142931432 has 24 divisors (see below), whose sum is σ = 311751810. Its totient is φ = 61256160.

The previous prime is 142931423. The next prime is 142931443. The reversal of 142931432 is 234139241.

It can be written as a sum of positive squares in only one way, i.e., 141943396 + 988036 = 11914^2 + 994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142931395 and 142931404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181919 + ... + 182702.

Almost surely, 2^142931432 is an apocalyptic number.

It is an amenable number.

142931432 is an abundant number, since it is smaller than the sum of its proper divisors (168820378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142931432 is a wasteful number, since it uses less digits than its factorization.

142931432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364641 (or 364630 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 142931432 is about 11955.3934272361. The cubic root of 142931432 is about 522.8485584334.

The spelling of 142931432 in words is "one hundred forty-two million, nine hundred thirty-one thousand, four hundred thirty-two".