18942342 has 8 divisors (see below), whose sum is σ = 37884696. Its totient is φ = 6314112.

The previous prime is 18942337. The next prime is 18942349. The reversal of 18942342 is 24324981.

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

18942342 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18942349) 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, 1578523 + ... + 1578534.

It is an arithmetic number, because the mean of its divisors is an integer number (4735587).

Almost surely, 2^18942342 is an apocalyptic number.

18942342 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.

18942342 is a wasteful number, since it uses less digits than its factorization.

18942342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157062.

The product of its digits is 13824, while the sum is 33.

The square root of 18942342 is about 4352.2800920897. The cubic root of 18942342 is about 266.5699708442.

The spelling of 18942342 in words is "eighteen million, nine hundred forty-two thousand, three hundred forty-two".