12339243 has 16 divisors (see below), whose sum is σ = 20892160. Its totient is φ = 7050888.

The previous prime is 12339211. The next prime is 12339253. The reversal of 12339243 is 34293321.

It is a happy number.

It is not a de Polignac number, because 12339243 - 2⁵ = 12339211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12339203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32455 + ... + 32832.

It is an arithmetic number, because the mean of its divisors is an integer number (1305760).

Almost surely, 2^12339243 is an apocalyptic number.

12339243 is a deficient number, since it is larger than the sum of its proper divisors (8552917).

12339243 is an equidigital number, since it uses as much as digits as its factorization.

12339243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65303 (or 65297 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 12339243 is about 3512.7258646242. The cubic root of 12339243 is about 231.0802554669.

The spelling of 12339243 in words is "twelve million, three hundred thirty-nine thousand, two hundred forty-three".