12556243 has 8 divisors (see below), whose sum is σ = 14405120. Its totient is φ = 10721160.

The previous prime is 12556241. The next prime is 12556253. The reversal of 12556243 is 34265521.

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

It is a cyclic number.

It is not a de Polignac number, because 12556243 - 2¹ = 12556241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12556241) 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, 1413 + ... + 5206.

It is an arithmetic number, because the mean of its divisors is an integer number (1800640).

Almost surely, 2^12556243 is an apocalyptic number.

12556243 is a deficient number, since it is larger than the sum of its proper divisors (1848877).

12556243 is an equidigital number, since it uses as much as digits as its factorization.

12556243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6897.

The product of its digits is 7200, while the sum is 28.

The square root of 12556243 is about 3543.4789402507. The cubic root of 12556243 is about 232.4269967739.

The spelling of 12556243 in words is "twelve million, five hundred fifty-six thousand, two hundred forty-three".