126785317 has 2 divisors, whose sum is σ = 126785318. Its totient is φ = 126785316.

The previous prime is 126785297. The next prime is 126785333. The reversal of 126785317 is 713587621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73290721 + 53494596 = 8561^2 + 7314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126785317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126785317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126785357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63392658 + 63392659.

It is an arithmetic number, because the mean of its divisors is an integer number (63392659).

Almost surely, 2^126785317 is an apocalyptic number.

It is an amenable number.

126785317 is a deficient number, since it is larger than the sum of its proper divisors (1).

126785317 is an equidigital number, since it uses as much as digits as its factorization.

126785317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 126785317 is about 11259.8986229895. The cubic root of 126785317 is about 502.3691789182.

The spelling of 126785317 in words is "one hundred twenty-six million, seven hundred eighty-five thousand, three hundred seventeen".