13121417 has 2 divisors, whose sum is σ = 13121418. Its totient is φ = 13121416.

The previous prime is 13121411. The next prime is 13121429. The reversal of 13121417 is 71412131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10883401 + 2238016 = 3299^2 + 1496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121417 is a prime.

It is not a weakly prime, because it can be changed into another prime (13121411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560708 + 6560709.

It is an arithmetic number, because the mean of its divisors is an integer number (6560709).

Almost surely, 2^13121417 is an apocalyptic number.

It is an amenable number.

13121417 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121417 is an equidigital number, since it uses as much as digits as its factorization.

13121417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 20.

The square root of 13121417 is about 3622.3496518144. The cubic root of 13121417 is about 235.8632323035.

Adding to 13121417 its reverse (71412131), we get a palindrome (84533548).

The spelling of 13121417 in words is "thirteen million, one hundred twenty-one thousand, four hundred seventeen".