126713 has 2 divisors, whose sum is σ = 126714. Its totient is φ = 126712.

The previous prime is 126703. The next prime is 126719. The reversal of 126713 is 317621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123904 + 2809 = 352^2 + 53^2 .

It is an emirp because it is prime and its reverse (317621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126713 - 2⁸ = 126457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (126719) 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, 63356 + 63357.

It is an arithmetic number, because the mean of its divisors is an integer number (63357).

2¹²⁶⁷¹³ is an apocalyptic number.

It is an amenable number.

126713 is a deficient number, since it is larger than the sum of its proper divisors (1).

126713 is an equidigital number, since it uses as much as digits as its factorization.

126713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 20.

The square root of 126713 is about 355.9676951635. The cubic root of 126713 is about 50.2273645402.

It can be divided in two parts, 1267 and 13, that multiplied together give a triangular number (16471 = T₁₈₁).

The spelling of 126713 in words is "one hundred twenty-six thousand, seven hundred thirteen".