18112042 has 8 divisors (see below), whose sum is σ = 29257956. Its totient is φ = 8359392.

The previous prime is 18112019. The next prime is 18112121. The reversal of 18112042 is 24021181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17901361 + 210681 = 4231^2 + 459^2 .

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, 348283 + ... + 348334.

Almost surely, 2^18112042 is an apocalyptic number.

18112042 is a deficient number, since it is larger than the sum of its proper divisors (11145914).

18112042 is a wasteful number, since it uses less digits than its factorization.

18112042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696632.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 18112042 is about 4255.8244794634. The cubic root of 18112042 is about 262.6167800880.

The spelling of 18112042 in words is "eighteen million, one hundred twelve thousand, forty-two".