12743791 has 4 divisors (see below), whose sum is σ = 12751000. Its totient is φ = 12736584.

The previous prime is 12743777. The next prime is 12743803. The reversal of 12743791 is 19734721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19734721 = 43 ⋅458947.

It is a cyclic number.

It is not a de Polignac number, because 12743791 - 2⁷ = 12743663 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 (12743701) 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, 1060 + ... + 5158.

It is an arithmetic number, because the mean of its divisors is an integer number (3187750).

Almost surely, 2^12743791 is an apocalyptic number.

12743791 is a deficient number, since it is larger than the sum of its proper divisors (7209).

12743791 is an equidigital number, since it uses as much as digits as its factorization.

12743791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208.

The product of its digits is 10584, while the sum is 34.

The square root of 12743791 is about 3569.8446744922. The cubic root of 12743791 is about 233.5785080524.

The spelling of 12743791 in words is "twelve million, seven hundred forty-three thousand, seven hundred ninety-one".