12426517 has 2 divisors, whose sum is σ = 12426518. Its totient is φ = 12426516.

The previous prime is 12426503. The next prime is 12426523. The reversal of 12426517 is 71562421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6345361 + 6081156 = 2519^2 + 2466^2 .

It is a cyclic number.

It is not a de Polignac number, because 12426517 - 2⁷ = 12426389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12426577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213258 + 6213259.

It is an arithmetic number, because the mean of its divisors is an integer number (6213259).

Almost surely, 2^12426517 is an apocalyptic number.

It is an amenable number.

12426517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12426517 is an equidigital number, since it uses as much as digits as its factorization.

12426517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 12426517 is about 3525.1265225521. The cubic root of 12426517 is about 231.6237771184.

Adding to 12426517 its reverse (71562421), we get a palindrome (83988938).

The spelling of 12426517 in words is "twelve million, four hundred twenty-six thousand, five hundred seventeen".