129004163 has 16 divisors (see below), whose sum is σ = 136655904. Its totient is φ = 121616640.

The previous prime is 129004153. The next prime is 129004193. The reversal of 129004163 is 361400921.

It is a Cunningham number, because it is equal to 11358²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129004163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129004133) 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, 420056 + ... + 420362.

It is an arithmetic number, because the mean of its divisors is an integer number (8540994).

Almost surely, 2^129004163 is an apocalyptic number.

129004163 is a deficient number, since it is larger than the sum of its proper divisors (7651741).

129004163 is a wasteful number, since it uses less digits than its factorization.

129004163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 129004163 is about 11357.9999559782. Note that the first 4 decimals coincide. The cubic root of 129004163 is about 505.2828699853.

The spelling of 129004163 in words is "one hundred twenty-nine million, four thousand, one hundred sixty-three".