23157542 has 16 divisors (see below), whose sum is σ = 36894960. Its totient is φ = 10870272.

The previous prime is 23157529. The next prime is 23157611. The reversal of 23157542 is 24575132.

It is a happy number.

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, 1598 + ... + 6990.

It is an arithmetic number, because the mean of its divisors is an integer number (2305935).

Almost surely, 2^23157542 is an apocalyptic number.

23157542 is a deficient number, since it is larger than the sum of its proper divisors (13737418).

23157542 is a wasteful number, since it uses less digits than its factorization.

23157542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527.

The product of its digits is 8400, while the sum is 29.

The square root of 23157542 is about 4812.2283819453. The cubic root of 23157542 is about 285.0345377247.

The spelling of 23157542 in words is "twenty-three million, one hundred fifty-seven thousand, five hundred forty-two".