126361217 has 2 divisors, whose sum is σ = 126361218. Its totient is φ = 126361216.

The previous prime is 126361199. The next prime is 126361237. The reversal of 126361217 is 712163621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111492481 + 14868736 = 10559^2 + 3856^2 .

It is a cyclic number.

It is not a de Polignac number, because 126361217 - 2¹⁰ = 126360193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126361217.

It is not a weakly prime, because it can be changed into another prime (126361237) 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, 63180608 + 63180609.

It is an arithmetic number, because the mean of its divisors is an integer number (63180609).

Almost surely, 2^126361217 is an apocalyptic number.

It is an amenable number.

126361217 is a deficient number, since it is larger than the sum of its proper divisors (1).

126361217 is an equidigital number, since it uses as much as digits as its factorization.

126361217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 126361217 is about 11241.0505291988. The cubic root of 126361217 is about 501.8084074396.

The spelling of 126361217 in words is "one hundred twenty-six million, three hundred sixty-one thousand, two hundred seventeen".