188997042 has 16 divisors (see below), whose sum is σ = 407070720. Its totient is φ = 58152912.

The previous prime is 188997037. The next prime is 188997043. The reversal of 188997042 is 240799881.

It is a junction number, because it is equal to n+sod(n) for n = 188996982 and 188997000.

It is not an unprimeable number, because it can be changed into a prime (188997043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211442 + ... + 1211597.

It is an arithmetic number, because the mean of its divisors is an integer number (25441920).

Almost surely, 2^188997042 is an apocalyptic number.

188997042 is an abundant number, since it is smaller than the sum of its proper divisors (218073678).

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

188997042 is a wasteful number, since it uses less digits than its factorization.

188997042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423057.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 188997042 is about 13747.6195030267. The cubic root of 188997042 is about 573.8763609270.

The spelling of 188997042 in words is "one hundred eighty-eight million, nine hundred ninety-seven thousand, forty-two".