12706239 has 48 divisors (see below), whose sum is σ = 21769440. Its totient is φ = 6531840.

The previous prime is 12706237. The next prime is 12706241. The reversal of 12706239 is 93260721.

It is an interprime number because it is at equal distance from previous prime (12706237) and next prime (12706241).

It is not a de Polignac number, because 12706239 - 2¹ = 12706237 is a prime.

It is a super-2 number, since 2×12706239² = 322897019050242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12706237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116517 + ... + 116625.

It is an arithmetic number, because the mean of its divisors is an integer number (453530).

It is the magic constant of a 294 × 294 magic square.

Almost surely, 2^12706239 is an apocalyptic number.

12706239 is a deficient number, since it is larger than the sum of its proper divisors (9063201).

12706239 is a wasteful number, since it uses less digits than its factorization.

12706239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 12706239 is about 3564.5811815696. The cubic root of 12706239 is about 233.3488545231.

The spelling of 12706239 in words is "twelve million, seven hundred six thousand, two hundred thirty-nine".