129615071 has 2 divisors, whose sum is σ = 129615072. Its totient is φ = 129615070.

The previous prime is 129615053. The next prime is 129615103. The reversal of 129615071 is 170516921.

It is an a-pointer prime, because the next prime (129615103) can be obtained adding 129615071 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (170516921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129615071 - 2¹⁴ = 129598687 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 (129615671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64807535 + 64807536.

It is an arithmetic number, because the mean of its divisors is an integer number (64807536).

Almost surely, 2^129615071 is an apocalyptic number.

129615071 is a deficient number, since it is larger than the sum of its proper divisors (1).

129615071 is an equidigital number, since it uses as much as digits as its factorization.

129615071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 129615071 is about 11384.8614835667. The cubic root of 129615071 is about 506.0792147382.

The spelling of 129615071 in words is "one hundred twenty-nine million, six hundred fifteen thousand, seventy-one".