23656042 has 4 divisors (see below), whose sum is σ = 35484066. Its totient is φ = 11828020.

The previous prime is 23656037. The next prime is 23656049. The reversal of 23656042 is 24065632.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18498601 + 5157441 = 4301^2 + 2271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23656042.

It is not an unprimeable number, because it can be changed into a prime (23656049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5914009 + ... + 5914012.

Almost surely, 2^23656042 is an apocalyptic number.

23656042 is a deficient number, since it is larger than the sum of its proper divisors (11828024).

23656042 is a wasteful number, since it uses less digits than its factorization.

23656042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828023.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 23656042 is about 4863.7477319450. The cubic root of 23656042 is about 287.0652969308.

The spelling of 23656042 in words is "twenty-three million, six hundred fifty-six thousand, forty-two".