18075042 has 64 divisors (see below), whose sum is σ = 43008000. Its totient is φ = 5610384.

The previous prime is 18075037. The next prime is 18075049. The reversal of 18075042 is 24057081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18074997 and 18075015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80943 + ... + 81165.

It is an arithmetic number, because the mean of its divisors is an integer number (672000).

Almost surely, 2^18075042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18075042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21504000).

18075042 is an abundant number, since it is smaller than the sum of its proper divisors (24932958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18075042 is a wasteful number, since it uses less digits than its factorization.

18075042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 18075042 is about 4251.4752733610. The cubic root of 18075042 is about 262.4378301750.

The spelling of 18075042 in words is "eighteen million, seventy-five thousand, forty-two".