188090042 has 32 divisors (see below), whose sum is σ = 332083584. Its totient is φ = 78220800.

The previous prime is 188090029. The next prime is 188090047. The reversal of 188090042 is 240090881.

It is a happy number.

188090042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 188089990 and 188090008.

It is not an unprimeable number, because it can be changed into a prime (188090047) 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, 120338 + ... + 121890.

It is an arithmetic number, because the mean of its divisors is an integer number (10377612).

Almost surely, 2^188090042 is an apocalyptic number.

188090042 is a deficient number, since it is larger than the sum of its proper divisors (143993542).

188090042 is a wasteful number, since it uses less digits than its factorization.

188090042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 188090042 is about 13714.5923016326. The cubic root of 188090042 is about 572.9568743578.

The spelling of 188090042 in words is "one hundred eighty-eight million, ninety thousand, forty-two".