129349023 has 8 divisors (see below), whose sum is σ = 172754736. Its totient is φ = 86088000.

The previous prime is 129349021. The next prime is 129349027. The reversal of 129349023 is 320943921.

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

It is not a de Polignac number, because 129349023 - 2¹ = 129349021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129349021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34068 + ... + 37673.

It is an arithmetic number, because the mean of its divisors is an integer number (21594342).

Almost surely, 2^129349023 is an apocalyptic number.

129349023 is a deficient number, since it is larger than the sum of its proper divisors (43405713).

129349023 is an equidigital number, since it uses as much as digits as its factorization.

129349023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72345.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 129349023 is about 11373.1711936469. The cubic root of 129349023 is about 505.7327180210.

The spelling of 129349023 in words is "one hundred twenty-nine million, three hundred forty-nine thousand, twenty-three".