129829523 has 2 divisors, whose sum is σ = 129829524. Its totient is φ = 129829522.

The previous prime is 129829471. The next prime is 129829529. The reversal of 129829523 is 325928921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129829523 - 2⁸ = 129829267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (129829529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64914761 + 64914762.

It is an arithmetic number, because the mean of its divisors is an integer number (64914762).

Almost surely, 2^129829523 is an apocalyptic number.

129829523 is a deficient number, since it is larger than the sum of its proper divisors (1).

129829523 is an equidigital number, since it uses as much as digits as its factorization.

129829523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 129829523 is about 11394.2758874796. The cubic root of 129829523 is about 506.3581686660.

The spelling of 129829523 in words is "one hundred twenty-nine million, eight hundred twenty-nine thousand, five hundred twenty-three".