142977992 has 16 divisors (see below), whose sum is σ = 271478400. Its totient is φ = 70583760.

The previous prime is 142977949. The next prime is 142978013. The reversal of 142977992 is 299779241.

It is a self number, because there is not a number n which added to its sum of digits gives 142977992.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112484 + ... + 113747.

It is an arithmetic number, because the mean of its divisors is an integer number (16967400).

Almost surely, 2^142977992 is an apocalyptic number.

It is an amenable number.

142977992 is a deficient number, since it is larger than the sum of its proper divisors (128500408).

142977992 is a wasteful number, since it uses less digits than its factorization.

142977992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226316 (or 226312 counting only the distinct ones).

The product of its digits is 571536, while the sum is 50.

The square root of 142977992 is about 11957.3405069857. The cubic root of 142977992 is about 522.9053250141.

The spelling of 142977992 in words is "one hundred forty-two million, nine hundred seventy-seven thousand, nine hundred ninety-two".