18061242 has 32 divisors (see below), whose sum is σ = 38610432. Its totient is φ = 5612544.

The previous prime is 18061237. The next prime is 18061249. The reversal of 18061242 is 24216081.

It is not an unprimeable number, because it can be changed into a prime (18061249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10743 + ... + 12309.

It is an arithmetic number, because the mean of its divisors is an integer number (1206576).

Almost surely, 2^18061242 is an apocalyptic number.

18061242 is an abundant number, since it is smaller than the sum of its proper divisors (20549190).

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

18061242 is a wasteful number, since it uses less digits than its factorization.

18061242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18061242 is about 4249.8519974230. The cubic root of 18061242 is about 262.3710241682.

The spelling of 18061242 in words is "eighteen million, sixty-one thousand, two hundred forty-two".