129024029 has 2 divisors, whose sum is σ = 129024030. Its totient is φ = 129024028.

The previous prime is 129023989. The next prime is 129024031. The reversal of 129024029 is 920420921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120012025 + 9012004 = 10955^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 129024029 - 2²⁰ = 127975453 is a prime.

It is a Sophie Germain prime.

Together with 129024031, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129023992 and 129024010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129024229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64512014 + 64512015.

It is an arithmetic number, because the mean of its divisors is an integer number (64512015).

Almost surely, 2^129024029 is an apocalyptic number.

It is an amenable number.

129024029 is a deficient number, since it is larger than the sum of its proper divisors (1).

129024029 is an equidigital number, since it uses as much as digits as its factorization.

129024029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 129024029 is about 11358.8744600863. The cubic root of 129024029 is about 505.3088056710.

The spelling of 129024029 in words is "one hundred twenty-nine million, twenty-four thousand, twenty-nine".