142131928 has 8 divisors (see below), whose sum is σ = 266497380. Its totient is φ = 71065960.

The previous prime is 142131893. The next prime is 142131937. The reversal of 142131928 is 829131241.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 142131928.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8883238 + ... + 8883253.

Almost surely, 2^142131928 is an apocalyptic number.

It is an amenable number.

142131928 is a deficient number, since it is larger than the sum of its proper divisors (124365452).

142131928 is a wasteful number, since it uses less digits than its factorization.

142131928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17766497 (or 17766493 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 142131928 is about 11921.9095785868. The cubic root of 142131928 is about 521.8718631673.

The spelling of 142131928 in words is "one hundred forty-two million, one hundred thirty-one thousand, nine hundred twenty-eight".