12746239 has 8 divisors (see below), whose sum is σ = 14353920. Its totient is φ = 11213400.

The previous prime is 12746233. The next prime is 12746257. The reversal of 12746239 is 93264721.

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

It is not a de Polignac number, because 12746239 - 2³ = 12746231 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 (12746231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18349 + ... + 19030.

It is an arithmetic number, because the mean of its divisors is an integer number (1794240).

Almost surely, 2^12746239 is an apocalyptic number.

12746239 is a deficient number, since it is larger than the sum of its proper divisors (1607681).

12746239 is a wasteful number, since it uses less digits than its factorization.

12746239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37421.

The product of its digits is 18144, while the sum is 34.

The square root of 12746239 is about 3570.1875300886. The cubic root of 12746239 is about 233.5934634027.

The spelling of 12746239 in words is "twelve million, seven hundred forty-six thousand, two hundred thirty-nine".