129242183 has 16 divisors (see below), whose sum is σ = 154752000. Its totient is φ = 105592032.

The previous prime is 129242173. The next prime is 129242189. The reversal of 129242183 is 381242921.

It is not a de Polignac number, because 129242183 - 2⁴ = 129242167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129242189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12008 + ... + 20066.

It is an arithmetic number, because the mean of its divisors is an integer number (9672000).

Almost surely, 2^129242183 is an apocalyptic number.

129242183 is a deficient number, since it is larger than the sum of its proper divisors (25509817).

129242183 is an equidigital number, since it uses as much as digits as its factorization.

129242183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8174.

The product of its digits is 6912, while the sum is 32.

The square root of 129242183 is about 11368.4732044369. The cubic root of 129242183 is about 505.5934375796.

The spelling of 129242183 in words is "one hundred twenty-nine million, two hundred forty-two thousand, one hundred eighty-three".