12517943 has 2 divisors, whose sum is σ = 12517944. Its totient is φ = 12517942.

The previous prime is 12517931. The next prime is 12517961. The reversal of 12517943 is 34971521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12517943 - 2⁴ = 12517927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12517913) 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 as a sum of consecutive naturals, namely, 6258971 + 6258972.

It is an arithmetic number, because the mean of its divisors is an integer number (6258972).

Almost surely, 2^12517943 is an apocalyptic number.

12517943 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517943 is an equidigital number, since it uses as much as digits as its factorization.

12517943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 12517943 is about 3538.0705193650. The cubic root of 12517943 is about 232.1904339612.

The spelling of 12517943 in words is "twelve million, five hundred seventeen thousand, nine hundred forty-three".