12442817 has 2 divisors, whose sum is σ = 12442818. Its totient is φ = 12442816.

The previous prime is 12442813. The next prime is 12442847. The reversal of 12442817 is 71824421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9024016 + 3418801 = 3004^2 + 1849^2 .

It is an emirp because it is prime and its reverse (71824421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12442817 - 2² = 12442813 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12442817.

It is not a weakly prime, because it can be changed into another prime (12442813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221408 + 6221409.

It is an arithmetic number, because the mean of its divisors is an integer number (6221409).

Almost surely, 2^12442817 is an apocalyptic number.

It is an amenable number.

12442817 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442817 is an equidigital number, since it uses as much as digits as its factorization.

12442817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 29.

The square root of 12442817 is about 3527.4377386426. The cubic root of 12442817 is about 231.7250073611.

The spelling of 12442817 in words is "twelve million, four hundred forty-two thousand, eight hundred seventeen".