126740709317 has 2 divisors, whose sum is σ = 126740709318. Its totient is φ = 126740709316.

The previous prime is 126740709239. The next prime is 126740709391. The reversal of 126740709317 is 713907047621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87790134436 + 38950574881 = 296294^2 + 197359^2 .

It is a cyclic number.

It is not a de Polignac number, because 126740709317 - 2²² = 126736515013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126740709397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63370354658 + 63370354659.

It is an arithmetic number, because the mean of its divisors is an integer number (63370354659).

Almost surely, 2^126740709317 is an apocalyptic number.

It is an amenable number.

126740709317 is a deficient number, since it is larger than the sum of its proper divisors (1).

126740709317 is an equidigital number, since it uses as much as digits as its factorization.

126740709317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 126740709317 in words is "one hundred twenty-six billion, seven hundred forty million, seven hundred nine thousand, three hundred seventeen".