42657918 has 8 divisors (see below), whose sum is σ = 85315848. Its totient is φ = 14219304.

The previous prime is 42657889. The next prime is 42657931. The reversal of 42657918 is 81975624.

It is a sphenic number, since it is the product of 3 distinct primes.

42657918 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42657918.

It is a congruent number.

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, 3554821 + ... + 3554832.

It is an arithmetic number, because the mean of its divisors is an integer number (10664481).

Almost surely, 2^42657918 is an apocalyptic number.

42657918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42657918 is a wasteful number, since it uses less digits than its factorization.

42657918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109658.

The product of its digits is 120960, while the sum is 42.

The square root of 42657918 is about 6531.3029327999. The cubic root of 42657918 is about 349.4083009360.

The spelling of 42657918 in words is "forty-two million, six hundred fifty-seven thousand, nine hundred eighteen".