42188458 has 32 divisors (see below), whose sum is σ = 74511360. Its totient is φ = 17729280.

The previous prime is 42188453. The next prime is 42188459. The reversal of 42188458 is 85488124.

It is a self number, because there is not a number n which added to its sum of digits gives 42188458.

It is not an unprimeable number, because it can be changed into a prime (42188453) 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, 12163 + ... + 15241.

It is an arithmetic number, because the mean of its divisors is an integer number (2328480).

Almost surely, 2^42188458 is an apocalyptic number.

42188458 is a deficient number, since it is larger than the sum of its proper divisors (32322902).

42188458 is a wasteful number, since it uses less digits than its factorization.

42188458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142.

The product of its digits is 81920, while the sum is 40.

The square root of 42188458 is about 6495.2642748390. The cubic root of 42188458 is about 348.1217975482.

The spelling of 42188458 in words is "forty-two million, one hundred eighty-eight thousand, four hundred fifty-eight".