23440542 has 16 divisors (see below), whose sum is σ = 48919680. Its totient is φ = 7473752.

The previous prime is 23440537. The next prime is 23440577. The reversal of 23440542 is 24504432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84792 + ... + 85067.

It is an arithmetic number, because the mean of its divisors is an integer number (3057480).

Almost surely, 2^23440542 is an apocalyptic number.

23440542 is an abundant number, since it is smaller than the sum of its proper divisors (25479138).

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

23440542 is a wasteful number, since it uses less digits than its factorization.

23440542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169887.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 23440542 is about 4841.5433489746. The cubic root of 23440542 is about 286.1909413320.

Adding to 23440542 its reverse (24504432), we get a palindrome (47944974).

The spelling of 23440542 in words is "twenty-three million, four hundred forty thousand, five hundred forty-two".