42255618 has 8 divisors (see below), whose sum is σ = 84511248. Its totient is φ = 14085204.

The previous prime is 42255617. The next prime is 42255637. The reversal of 42255618 is 81655224.

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

42255618 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42255611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3521296 + ... + 3521307.

It is an arithmetic number, because the mean of its divisors is an integer number (10563906).

Almost surely, 2^42255618 is an apocalyptic number.

42255618 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.

42255618 is a wasteful number, since it uses less digits than its factorization.

42255618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042608.

The product of its digits is 19200, while the sum is 33.

The square root of 42255618 is about 6500.4321394812. The cubic root of 42255618 is about 348.3064251756.

The spelling of 42255618 in words is "forty-two million, two hundred fifty-five thousand, six hundred eighteen".