129615113 has 2 divisors, whose sum is σ = 129615114. Its totient is φ = 129615112.

The previous prime is 129615103. The next prime is 129615119. The reversal of 129615113 is 311516921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107081104 + 22534009 = 10348^2 + 4747^2 .

It is an emirp because it is prime and its reverse (311516921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129615113 - 2¹² = 129611017 is a prime.

It is not a weakly prime, because it can be changed into another prime (129615119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64807556 + 64807557.

It is an arithmetic number, because the mean of its divisors is an integer number (64807557).

Almost surely, 2^129615113 is an apocalyptic number.

It is an amenable number.

129615113 is a deficient number, since it is larger than the sum of its proper divisors (1).

129615113 is an equidigital number, since it uses as much as digits as its factorization.

129615113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 29.

The square root of 129615113 is about 11384.8633281212. The cubic root of 129615113 is about 506.0792694008.

The spelling of 129615113 in words is "one hundred twenty-nine million, six hundred fifteen thousand, one hundred thirteen".