129645323 has 2 divisors, whose sum is σ = 129645324. Its totient is φ = 129645322.

The previous prime is 129645293. The next prime is 129645353. The reversal of 129645323 is 323546921.

It is a balanced prime because it is at equal distance from previous prime (129645293) and next prime (129645353).

It is a cyclic number.

It is not a de Polignac number, because 129645323 - 2²² = 125451019 is a prime.

It is not a weakly prime, because it can be changed into another prime (129645353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64822661 + 64822662.

It is an arithmetic number, because the mean of its divisors is an integer number (64822662).

Almost surely, 2^129645323 is an apocalyptic number.

129645323 is a deficient number, since it is larger than the sum of its proper divisors (1).

129645323 is an equidigital number, since it uses as much as digits as its factorization.

129645323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 129645323 is about 11386.1900124669. The cubic root of 129645323 is about 506.1185844332.

The spelling of 129645323 in words is "one hundred twenty-nine million, six hundred forty-five thousand, three hundred twenty-three".