12132239 has 4 divisors (see below), whose sum is σ = 13865424. Its totient is φ = 10399056.

The previous prime is 12132223. The next prime is 12132259. The reversal of 12132239 is 93223121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93223121 = 17 ⋅5483713.

It is a cyclic number.

It is not a de Polignac number, because 12132239 - 2⁴ = 12132223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866582 + ... + 866595.

It is an arithmetic number, because the mean of its divisors is an integer number (3466356).

Almost surely, 2^12132239 is an apocalyptic number.

12132239 is a deficient number, since it is larger than the sum of its proper divisors (1733185).

12132239 is an equidigital number, since it uses as much as digits as its factorization.

12132239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733184.

The product of its digits is 648, while the sum is 23.

The square root of 12132239 is about 3483.1363740170. The cubic root of 12132239 is about 229.7807551570.

The spelling of 12132239 in words is "twelve million, one hundred thirty-two thousand, two hundred thirty-nine".