129529 has 2 divisors, whose sum is σ = 129530. Its totient is φ = 129528.

The previous prime is 129527. The next prime is 129533. The reversal of 129529 is 925921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123904 + 5625 = 352^2 + 75^2 .

It is an emirp because it is prime and its reverse (925921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129529 - 2¹ = 129527 is a prime.

Together with 129527, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129497 and 129506.

It is not a weakly prime, because it can be changed into another prime (129527) 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, 64764 + 64765.

It is an arithmetic number, because the mean of its divisors is an integer number (64765).

2¹²⁹⁵²⁹ is an apocalyptic number.

It is an amenable number.

129529 is a deficient number, since it is larger than the sum of its proper divisors (1).

129529 is an equidigital number, since it uses as much as digits as its factorization.

129529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 28.

The square root of 129529 is about 359.9013753794. The cubic root of 129529 is about 50.5967169153.

The spelling of 129529 in words is "one hundred twenty-nine thousand, five hundred twenty-nine".