129070517 has 2 divisors, whose sum is σ = 129070518. Its totient is φ = 129070516.

The previous prime is 129070499. The next prime is 129070531. The reversal of 129070517 is 715070921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69872881 + 59197636 = 8359^2 + 7694^2 .

It is an emirp because it is prime and its reverse (715070921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129070517 - 2¹⁸ = 128808373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129070537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64535258 + 64535259.

It is an arithmetic number, because the mean of its divisors is an integer number (64535259).

Almost surely, 2^129070517 is an apocalyptic number.

It is an amenable number.

129070517 is a deficient number, since it is larger than the sum of its proper divisors (1).

129070517 is an equidigital number, since it uses as much as digits as its factorization.

129070517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 129070517 is about 11360.9206053031. The cubic root of 129070517 is about 505.3694868098.

The spelling of 129070517 in words is "one hundred twenty-nine million, seventy thousand, five hundred seventeen".