129323957 has 8 divisors (see below), whose sum is σ = 148616832. Its totient is φ = 110235600.

The previous prime is 129323933. The next prime is 129323959. The reversal of 129323957 is 759323921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129323957 - 2⁶ = 129323893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129323959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49769 + ... + 52302.

It is an arithmetic number, because the mean of its divisors is an integer number (18577104).

Almost surely, 2^129323957 is an apocalyptic number.

It is an amenable number.

129323957 is a deficient number, since it is larger than the sum of its proper divisors (19292875).

129323957 is a wasteful number, since it uses less digits than its factorization.

129323957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102259.

The product of its digits is 102060, while the sum is 41.

The square root of 129323957 is about 11372.0691608871. The cubic root of 129323957 is about 505.7000479759.

The spelling of 129323957 in words is "one hundred twenty-nine million, three hundred twenty-three thousand, nine hundred fifty-seven".