23239042 has 4 divisors (see below), whose sum is σ = 34858566. Its totient is φ = 11619520.

The previous prime is 23239031. The next prime is 23239043. The reversal of 23239042 is 24093232.

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., 21520321 + 1718721 = 4639^2 + 1311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23238998 and 23239016.

It is not an unprimeable number, because it can be changed into a prime (23239043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5809759 + ... + 5809762.

Almost surely, 2^23239042 is an apocalyptic number.

23239042 is a deficient number, since it is larger than the sum of its proper divisors (11619524).

23239042 is a wasteful number, since it uses less digits than its factorization.

23239042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11619523.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23239042 is about 4820.6889549109. The cubic root of 23239042 is about 285.3685270566.

The spelling of 23239042 in words is "twenty-three million, two hundred thirty-nine thousand, forty-two".