18070542 has 48 divisors (see below), whose sum is σ = 45059040. Its totient is φ = 5126976.

The previous prime is 18070529. The next prime is 18070553. The reversal of 18070542 is 24507081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21384 + ... + 22212.

It is an arithmetic number, because the mean of its divisors is an integer number (938730).

Almost surely, 2^18070542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18070542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22529520).

18070542 is an abundant number, since it is smaller than the sum of its proper divisors (26988498).

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

18070542 is a wasteful number, since it uses less digits than its factorization.

18070542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 1014 counting only the distinct ones).

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

The square root of 18070542 is about 4250.9460123601. The cubic root of 18070542 is about 262.4160493449.

The spelling of 18070542 in words is "eighteen million, seventy thousand, five hundred forty-two".