42591118 has 32 divisors (see below), whose sum is σ = 67931136. Its totient is φ = 20006688.

The previous prime is 42591083. The next prime is 42591187. The reversal of 42591118 is 81119524.

It is a happy number.

42591118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

42591118 is a Rhonda number in base 10.

Its product of digits (2880) is a multiple of the sum of its prime divisors (288).

It is a self number, because there is not a number n which added to its sum of digits gives 42591118.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413455 + ... + 413557.

It is an arithmetic number, because the mean of its divisors is an integer number (2122848).

Almost surely, 2^42591118 is an apocalyptic number.

42591118 is a deficient number, since it is larger than the sum of its proper divisors (25340018).

42591118 is a wasteful number, since it uses less digits than its factorization.

42591118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its digits is 2880, while the sum is 31.

The square root of 42591118 is about 6526.1870950809. The cubic root of 42591118 is about 349.2258207970.

The spelling of 42591118 in words is "forty-two million, five hundred ninety-one thousand, one hundred eighteen".