23142172 has 6 divisors (see below), whose sum is σ = 40498808. Its totient is φ = 11571084.

The previous prime is 23142169. The next prime is 23142173. The reversal of 23142172 is 27124132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23142173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2892768 + ... + 2892775.

Almost surely, 2^23142172 is an apocalyptic number.

It is an amenable number.

23142172 is a deficient number, since it is larger than the sum of its proper divisors (17356636).

23142172 is a wasteful number, since it uses less digits than its factorization.

23142172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785547 (or 5785545 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 23142172 is about 4810.6311436235. The cubic root of 23142172 is about 284.9714632349.

The spelling of 23142172 in words is "twenty-three million, one hundred forty-two thousand, one hundred seventy-two".