12442513 has 2 divisors, whose sum is σ = 12442514. Its totient is φ = 12442512.

The previous prime is 12442429. The next prime is 12442531. The reversal of 12442513 is 31524421.

Together with next prime (12442531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11068929 + 1373584 = 3327^2 + 1172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12442513 is a prime.

It is a super-2 number, since 2×12442513² = 309632259510338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12442553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221256 + 6221257.

It is an arithmetic number, because the mean of its divisors is an integer number (6221257).

Almost surely, 2^12442513 is an apocalyptic number.

It is an amenable number.

12442513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442513 is an equidigital number, since it uses as much as digits as its factorization.

12442513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 22.

The square root of 12442513 is about 3527.3946476117. The cubic root of 12442513 is about 231.7231201953.

Adding to 12442513 its reverse (31524421), we get a palindrome (43966934).

The spelling of 12442513 in words is "twelve million, four hundred forty-two thousand, five hundred thirteen".