24243239 has 2 divisors, whose sum is σ = 24243240. Its totient is φ = 24243238.

The previous prime is 24243229. The next prime is 24243287. The reversal of 24243239 is 93234242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24243239 is a prime.

It is a super-2 number, since 2×24243239² = 1175469274422242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24243229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12121619 + 12121620.

It is an arithmetic number, because the mean of its divisors is an integer number (12121620).

Almost surely, 2^24243239 is an apocalyptic number.

24243239 is a deficient number, since it is larger than the sum of its proper divisors (1).

24243239 is an equidigital number, since it uses as much as digits as its factorization.

24243239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

The square root of 24243239 is about 4923.7423775011. The cubic root of 24243239 is about 289.4211163357.

The spelling of 24243239 in words is "twenty-four million, two hundred forty-three thousand, two hundred thirty-nine".