12427117 has 2 divisors, whose sum is σ = 12427118. Its totient is φ = 12427116.

The previous prime is 12427097. The next prime is 12427139. The reversal of 12427117 is 71172421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 826281 = 3406^2 + 909^2 .

It is a cyclic number.

It is not a de Polignac number, because 12427117 - 2⁷ = 12426989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12427091 and 12427100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12427147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213558 + 6213559.

It is an arithmetic number, because the mean of its divisors is an integer number (6213559).

Almost surely, 2^12427117 is an apocalyptic number.

It is an amenable number.

12427117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12427117 is an equidigital number, since it uses as much as digits as its factorization.

12427117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 784, while the sum is 25.

The square root of 12427117 is about 3525.2116248532. The cubic root of 12427117 is about 231.6275049538.

Adding to 12427117 its reverse (71172421), we get a palindrome (83599538).

It can be divided in two parts, 12427 and 117, that added together give a square (12544 = 112²).

The spelling of 12427117 in words is "twelve million, four hundred twenty-seven thousand, one hundred seventeen".