13123239 has 8 divisors (see below), whose sum is σ = 17924592. Its totient is φ = 8535360.

The previous prime is 13123237. The next prime is 13123247. The reversal of 13123239 is 93232131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13123239 - 2¹ = 13123237 is a prime.

It is a super-2 number, since 2×13123239² = 344438803702242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53224 + ... + 53469.

It is an arithmetic number, because the mean of its divisors is an integer number (2240574).

Almost surely, 2^13123239 is an apocalyptic number.

13123239 is a deficient number, since it is larger than the sum of its proper divisors (4801353).

13123239 is a wasteful number, since it uses less digits than its factorization.

13123239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106737.

The product of its digits is 972, while the sum is 24.

The square root of 13123239 is about 3622.6011373045. The cubic root of 13123239 is about 235.8741488816.

The spelling of 13123239 in words is "thirteen million, one hundred twenty-three thousand, two hundred thirty-nine".