18330042 has 16 divisors (see below), whose sum is σ = 36874080. Its totient is φ = 6074352.

The previous prime is 18330031. The next prime is 18330071. The reversal of 18330042 is 24003381.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7792 + ... + 9867.

It is an arithmetic number, because the mean of its divisors is an integer number (2304630).

Almost surely, 2^18330042 is an apocalyptic number.

18330042 is an abundant number, since it is smaller than the sum of its proper divisors (18544038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18330042 is a wasteful number, since it uses less digits than its factorization.

18330042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17837.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 18330042 is about 4281.3598307080. The cubic root of 18330042 is about 263.6662161346. Note that the first 3 decimals are identical.

The spelling of 18330042 in words is "eighteen million, three hundred thirty thousand, forty-two".