129352023 has 24 divisors (see below), whose sum is σ = 196110720. Its totient is φ = 82001040.

The previous prime is 129351991. The next prime is 129352033. The reversal of 129352023 is 320253921.

It is not a de Polignac number, because 129352023 - 2⁵ = 129351991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129352033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35308 + ... + 38798.

It is an arithmetic number, because the mean of its divisors is an integer number (8171280).

Almost surely, 2^129352023 is an apocalyptic number.

129352023 is a deficient number, since it is larger than the sum of its proper divisors (66758697).

129352023 is a wasteful number, since it uses less digits than its factorization.

129352023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699 (or 3696 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 129352023 is about 11373.3030822185. The cubic root of 129352023 is about 505.7366278210.

The spelling of 129352023 in words is "one hundred twenty-nine million, three hundred fifty-two thousand, twenty-three".