18305042 has 16 divisors (see below), whose sum is σ = 31811712. Its totient is φ = 7737120.

The previous prime is 18305041. The next prime is 18305071. The reversal of 18305042 is 24050381.

It is a junction number, because it is equal to n+sod(n) for n = 18304999 and 18305017.

It is not an unprimeable number, because it can be changed into a prime (18305041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7934 + ... + 9977.

It is an arithmetic number, because the mean of its divisors is an integer number (1988232).

Almost surely, 2^18305042 is an apocalyptic number.

18305042 is a deficient number, since it is larger than the sum of its proper divisors (13506670).

18305042 is a wasteful number, since it uses less digits than its factorization.

18305042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17993.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 18305042 is about 4278.4392013911. The cubic root of 18305042 is about 263.5462917972.

The spelling of 18305042 in words is "eighteen million, three hundred five thousand, forty-two".