23139142 has 24 divisors (see below), whose sum is σ = 39804696. Its totient is φ = 10048896.

The previous prime is 23139139. The next prime is 23139143. The reversal of 23139142 is 24193132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23139143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3733 + ... + 7759.

It is an arithmetic number, because the mean of its divisors is an integer number (1658529).

Almost surely, 2^23139142 is an apocalyptic number.

23139142 is a deficient number, since it is larger than the sum of its proper divisors (16665554).

23139142 is a wasteful number, since it uses less digits than its factorization.

23139142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072 (or 4059 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 23139142 is about 4810.3162058226. The cubic root of 23139142 is about 284.9590256063.

The spelling of 23139142 in words is "twenty-three million, one hundred thirty-nine thousand, one hundred forty-two".