23142438 has 24 divisors (see below), whose sum is σ = 54700776. Its totient is φ = 7012800.

The previous prime is 23142421. The next prime is 23142463. The reversal of 23142438 is 83424132.

23142438 is a `hidden beast` number, since 231 + 424 + 3 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58243 + ... + 58638.

It is an arithmetic number, because the mean of its divisors is an integer number (2279199).

Almost surely, 2^23142438 is an apocalyptic number.

23142438 is an abundant number, since it is smaller than the sum of its proper divisors (31558338).

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

23142438 is a wasteful number, since it uses less digits than its factorization.

23142438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116900 (or 116897 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 23142438 is about 4810.6587906440. The cubic root of 23142438 is about 284.9725550673.

The spelling of 23142438 in words is "twenty-three million, one hundred forty-two thousand, four hundred thirty-eight".