18642342 has 16 divisors (see below), whose sum is σ = 37419840. Its totient is φ = 6191592.

The previous prime is 18642329. The next prime is 18642343. The reversal of 18642342 is 24324681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18642343) 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 7 ways as a sum of consecutive naturals, for example, 3792 + ... + 7187.

It is an arithmetic number, because the mean of its divisors is an integer number (2338740).

Almost surely, 2^18642342 is an apocalyptic number.

18642342 is an abundant number, since it is smaller than the sum of its proper divisors (18777498).

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

18642342 is a wasteful number, since it uses less digits than its factorization.

18642342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11267.

The product of its digits is 9216, while the sum is 30.

The square root of 18642342 is about 4317.6778481031. The cubic root of 18642342 is about 265.1552051539.

The spelling of 18642342 in words is "eighteen million, six hundred forty-two thousand, three hundred forty-two".