129659243 has 6 divisors (see below), whose sum is σ = 150828156. Its totient is φ = 111136452.

The previous prime is 129659237. The next prime is 129659269. The reversal of 129659243 is 342956921.

It is not a de Polignac number, because 129659243 - 2⁴ = 129659227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129659243.

It is not an unprimeable number, because it can be changed into a prime (129659213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1323005 + ... + 1323102.

It is an arithmetic number, because the mean of its divisors is an integer number (25138026).

Almost surely, 2^129659243 is an apocalyptic number.

129659243 is a deficient number, since it is larger than the sum of its proper divisors (21168913).

129659243 is an equidigital number, since it uses as much as digits as its factorization.

129659243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646121 (or 2646114 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 129659243 is about 11386.8012628657. The cubic root of 129659243 is about 506.1366977452.

The spelling of 129659243 in words is "one hundred twenty-nine million, six hundred fifty-nine thousand, two hundred forty-three".