18506042 has 8 divisors (see below), whose sum is σ = 27929856. Its totient is φ = 9196092.

The previous prime is 18506029. The next prime is 18506071. The reversal of 18506042 is 24060581.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28058 + ... + 28709.

It is an arithmetic number, because the mean of its divisors is an integer number (3491232).

Almost surely, 2^18506042 is an apocalyptic number.

18506042 is a deficient number, since it is larger than the sum of its proper divisors (9423814).

18506042 is a wasteful number, since it uses less digits than its factorization.

18506042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56932.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 18506042 is about 4301.8649444165. The cubic root of 18506042 is about 264.5074129304.

The spelling of 18506042 in words is "eighteen million, five hundred six thousand, forty-two".