657142092 has 48 divisors (see below), whose sum is σ = 1758668800. Its totient is φ = 211980240.

The previous prime is 657142063. The next prime is 657142093. The reversal of 657142092 is 290241756.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (657142093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94792 + ... + 101487.

Almost surely, 2^657142092 is an apocalyptic number.

657142092 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

657142092 is an abundant number, since it is smaller than the sum of its proper divisors (1101526708).

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

657142092 is a wasteful number, since it uses less digits than its factorization.

657142092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196323 (or 196315 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 657142092 is about 25634.7828545514. The cubic root of 657142092 is about 869.4002525241.

The spelling of 657142092 in words is "six hundred fifty-seven million, one hundred forty-two thousand, ninety-two".