129065923 has 8 divisors (see below), whose sum is σ = 148138848. Its totient is φ = 110151744.

The previous prime is 129065897. The next prime is 129065939. The reversal of 129065923 is 329560921.

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 129065923 - 2²¹ = 126968771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129065983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37936 + ... + 41197.

It is an arithmetic number, because the mean of its divisors is an integer number (18517356).

Almost surely, 2^129065923 is an apocalyptic number.

129065923 is a deficient number, since it is larger than the sum of its proper divisors (19072925).

129065923 is an equidigital number, since it uses as much as digits as its factorization.

129065923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79373.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 129065923 is about 11360.7184191846. The cubic root of 129065923 is about 505.3634908756.

The spelling of 129065923 in words is "one hundred twenty-nine million, sixty-five thousand, nine hundred twenty-three".