42618 has 8 divisors (see below), whose sum is σ = 85248. Its totient is φ = 14204.

The previous prime is 42611. The next prime is 42641. The reversal of 42618 is 81624.

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

42618 is an admirable number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 42594 and 42603.

It is not an unprimeable number, because it can be changed into a prime (42611) 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, 3546 + ... + 3557.

It is an arithmetic number, because the mean of its divisors is an integer number (10656).

2⁴²⁶¹⁸ is an apocalyptic number.

42618 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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42624).

42618 is a wasteful number, since it uses less digits than its factorization.

42618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7108.

The product of its digits is 384, while the sum is 21.

The square root of 42618 is about 206.4412749428. The cubic root of 42618 is about 34.9299278320.

It can be divided in two parts, 426 and 18, that added together give a palindrome (444).

The spelling of 42618 in words is "forty-two thousand, six hundred eighteen".