126317329 has 2 divisors, whose sum is σ = 126317330. Its totient is φ = 126317328.

The previous prime is 126317309. The next prime is 126317393. The reversal of 126317329 is 923713621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113465104 + 12852225 = 10652^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 126317329 - 2²¹ = 124220177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126317294 and 126317303.

It is not a weakly prime, because it can be changed into another prime (126317309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63158664 + 63158665.

It is an arithmetic number, because the mean of its divisors is an integer number (63158665).

Almost surely, 2^126317329 is an apocalyptic number.

It is an amenable number.

126317329 is a deficient number, since it is larger than the sum of its proper divisors (1).

126317329 is an equidigital number, since it uses as much as digits as its factorization.

126317329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 126317329 is about 11239.0982289506. The cubic root of 126317329 is about 501.7503043862.

The spelling of 126317329 in words is "one hundred twenty-six million, three hundred seventeen thousand, three hundred twenty-nine".