23742156 has 24 divisors (see below), whose sum is σ = 57186304. Its totient is φ = 7658640.

The previous prime is 23742151. The next prime is 23742161. The reversal of 23742156 is 65124732.

It is an interprime number because it is at equal distance from previous prime (23742151) and next prime (23742161).

It is not an unprimeable number, because it can be changed into a prime (23742151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31540 + ... + 32283.

Almost surely, 2^23742156 is an apocalyptic number.

It is an amenable number.

23742156 is an abundant number, since it is smaller than the sum of its proper divisors (33444148).

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

23742156 is a wasteful number, since it uses less digits than its factorization.

23742156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63861 (or 63859 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 23742156 is about 4872.5923285249. The cubic root of 23742156 is about 287.4132053058.

Adding to 23742156 its reverse (65124732), we get a palindrome (88866888).

The spelling of 23742156 in words is "twenty-three million, seven hundred forty-two thousand, one hundred fifty-six".