12743997 has 8 divisors (see below), whose sum is σ = 19419456. Its totient is φ = 7282272.

The previous prime is 12743977. The next prime is 12744019. The reversal of 12743997 is 79934721.

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

It is not a de Polignac number, because 12743997 - 2⁶ = 12743933 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12743917) 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 7 ways as a sum of consecutive naturals, for example, 303408 + ... + 303449.

It is an arithmetic number, because the mean of its divisors is an integer number (2427432).

Almost surely, 2^12743997 is an apocalyptic number.

It is an amenable number.

12743997 is a deficient number, since it is larger than the sum of its proper divisors (6675459).

12743997 is an equidigital number, since it uses as much as digits as its factorization.

12743997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606867.

The product of its digits is 95256, while the sum is 42.

The square root of 12743997 is about 3569.8735271715. The cubic root of 12743997 is about 233.5797666238.

It can be divided in two parts, 1274399 and 7, that added together give a triangular number (1274406 = T₁₅₉₆).

The spelling of 12743997 in words is "twelve million, seven hundred forty-three thousand, nine hundred ninety-seven".