126359917 has 2 divisors, whose sum is σ = 126359918. Its totient is φ = 126359916.

The previous prime is 126359911. The next prime is 126359969. The reversal of 126359917 is 719953621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115476516 + 10883401 = 10746^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 126359917 - 2¹⁹ = 125835629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126359911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63179958 + 63179959.

It is an arithmetic number, because the mean of its divisors is an integer number (63179959).

Almost surely, 2^126359917 is an apocalyptic number.

It is an amenable number.

126359917 is a deficient number, since it is larger than the sum of its proper divisors (1).

126359917 is an equidigital number, since it uses as much as digits as its factorization.

126359917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 43.

The square root of 126359917 is about 11240.9927052730. The cubic root of 126359917 is about 501.8066865710.

The spelling of 126359917 in words is "one hundred twenty-six million, three hundred fifty-nine thousand, nine hundred seventeen".