18704042 has 8 divisors (see below), whose sum is σ = 32064096. Its totient is φ = 8016012.

The previous prime is 18704041. The next prime is 18704047. The reversal of 18704042 is 24040781.

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

It is not an unprimeable number, because it can be changed into a prime (18704041) 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 3 ways as a sum of consecutive naturals, for example, 667988 + ... + 668015.

It is an arithmetic number, because the mean of its divisors is an integer number (4008012).

Almost surely, 2^18704042 is an apocalyptic number.

18704042 is a deficient number, since it is larger than the sum of its proper divisors (13360054).

18704042 is a wasteful number, since it uses less digits than its factorization.

18704042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336012.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 18704042 is about 4324.8169903477. The cubic root of 18704042 is about 265.4474084342.

The spelling of 18704042 in words is "eighteen million, seven hundred four thousand, forty-two".