12481239 has 4 divisors (see below), whose sum is σ = 16641656. Its totient is φ = 8320824.

The previous prime is 12481237. The next prime is 12481253. The reversal of 12481239 is 93218421.

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

It is not a de Polignac number, because 12481239 - 2¹ = 12481237 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 (12481237) 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, 2080204 + ... + 2080209.

It is an arithmetic number, because the mean of its divisors is an integer number (4160414).

Almost surely, 2^12481239 is an apocalyptic number.

12481239 is a deficient number, since it is larger than the sum of its proper divisors (4160417).

12481239 is an equidigital number, since it uses as much as digits as its factorization.

12481239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160416.

The product of its digits is 3456, while the sum is 30.

The square root of 12481239 is about 3532.8797035846. The cubic root of 12481239 is about 231.9632757467.

It can be divided in two parts, 12481 and 239, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 12481239 in words is "twelve million, four hundred eighty-one thousand, two hundred thirty-nine".