12791245 has 4 divisors (see below), whose sum is σ = 15349500. Its totient is φ = 10232992.

The previous prime is 12791231. The next prime is 12791249. The reversal of 12791245 is 54219721.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5294601 + 7496644 = 2301^2 + 2738^2 .

It is a cyclic number.

It is not a de Polignac number, because 12791245 - 2⁹ = 12790733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791249) 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 3 ways as a sum of consecutive naturals, for example, 1279120 + ... + 1279129.

It is an arithmetic number, because the mean of its divisors is an integer number (3837375).

Almost surely, 2^12791245 is an apocalyptic number.

It is an amenable number.

12791245 is a deficient number, since it is larger than the sum of its proper divisors (2558255).

12791245 is an equidigital number, since it uses as much as digits as its factorization.

12791245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558254.

The product of its digits is 5040, while the sum is 31.

The square root of 12791245 is about 3576.4850062596. The cubic root of 12791245 is about 233.8680740276.

The spelling of 12791245 in words is "twelve million, seven hundred ninety-one thousand, two hundred forty-five".