129611017 has 2 divisors, whose sum is σ = 129611018. Its totient is φ = 129611016.

The previous prime is 129610991. The next prime is 129611029. The reversal of 129611017 is 710116921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98485776 + 31125241 = 9924^2 + 5579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129611017 is a prime.

It is not a weakly prime, because it can be changed into another prime (129611047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64805508 + 64805509.

It is an arithmetic number, because the mean of its divisors is an integer number (64805509).

Almost surely, 2^129611017 is an apocalyptic number.

It is an amenable number.

129611017 is a deficient number, since it is larger than the sum of its proper divisors (1).

129611017 is an equidigital number, since it uses as much as digits as its factorization.

129611017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 28.

The square root of 129611017 is about 11384.6834387259. The cubic root of 129611017 is about 506.0739384316.

Adding to 129611017 its reverse (710116921), we get a palindrome (839727938).

The spelling of 129611017 in words is "one hundred twenty-nine million, six hundred eleven thousand, seventeen".