18044042 has 8 divisors (see below), whose sum is σ = 27084132. Its totient is φ = 9016000.

The previous prime is 18044041. The next prime is 18044051. The reversal of 18044042 is 24044081.

It can be written as a sum of positive squares in 2 ways, for example, as 17648401 + 395641 = 4201^2 + 629^2 .

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 = 18043999 and 18044017.

It is not an unprimeable number, because it can be changed into a prime (18044041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3992 + ... + 7212.

Almost surely, 2^18044042 is an apocalyptic number.

18044042 is a deficient number, since it is larger than the sum of its proper divisors (9040090).

18044042 is a wasteful number, since it uses less digits than its factorization.

18044042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 18044042 is about 4247.8279155352. The cubic root of 18044042 is about 262.2877110549.

The spelling of 18044042 in words is "eighteen million, forty-four thousand, forty-two".