42618556 has 12 divisors (see below), whose sum is σ = 74639880. Its totient is φ = 21292880.

The previous prime is 42618553. The next prime is 42618571. The reversal of 42618556 is 65581624.

42618556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42618551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3186 + ... + 9766.

It is an arithmetic number, because the mean of its divisors is an integer number (6219990).

Almost surely, 2^42618556 is an apocalyptic number.

It is an amenable number.

42618556 is a deficient number, since it is larger than the sum of its proper divisors (32021324).

42618556 is a wasteful number, since it uses less digits than its factorization.

42618556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8204 (or 8202 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 42618556 is about 6528.2889029209. The cubic root of 42618556 is about 349.3007973149.

The spelling of 42618556 in words is "forty-two million, six hundred eighteen thousand, five hundred fifty-six".