42655556 has 12 divisors (see below), whose sum is σ = 75417468. Its totient is φ = 21107712.

The previous prime is 42655553. The next prime is 42655559. The reversal of 42655556 is 65555624.

It is a happy number.

42655556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42655553) and next prime (42655559).

It can be written as a sum of positive squares in 2 ways, for example, as 13322500 + 29333056 = 3650^2 + 5416^2 .

It is not an unprimeable number, because it can be changed into a prime (42655553) 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, 54581 + ... + 55356.

It is an arithmetic number, because the mean of its divisors is an integer number (6284789).

Almost surely, 2^42655556 is an apocalyptic number.

It is an amenable number.

42655556 is a deficient number, since it is larger than the sum of its proper divisors (32761912).

42655556 is a wasteful number, since it uses less digits than its factorization.

42655556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110038 (or 110036 counting only the distinct ones).

The product of its digits is 180000, while the sum is 38.

The square root of 42655556 is about 6531.1221087957. The cubic root of 42655556 is about 349.4018518196.

The spelling of 42655556 in words is "forty-two million, six hundred fifty-five thousand, five hundred fifty-six".