18700042 has 8 divisors (see below), whose sum is σ = 28070496. Its totient is φ = 9343212.

The previous prime is 18700039. The next prime is 18700061. The reversal of 18700042 is 24000781.

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

It is a junction number, because it is equal to n+sod(n) for n = 18699986 and 18700022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (3508812).

Almost surely, 2^18700042 is an apocalyptic number.

18700042 is a deficient number, since it is larger than the sum of its proper divisors (9370454).

18700042 is a wasteful number, since it uses less digits than its factorization.

18700042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 18700042 is about 4324.3545183067. The cubic root of 18700042 is about 265.4284844438.

The spelling of 18700042 in words is "eighteen million, seven hundred thousand, forty-two".