129671271 has 12 divisors (see below), whose sum is σ = 187646472. Its totient is φ = 86288976.

The previous prime is 129671239. The next prime is 129671279. The reversal of 129671271 is 172176921.

It is a happy number.

It is not a de Polignac number, because 129671271 - 2⁵ = 129671239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129671279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7921 + ... + 17946.

It is an arithmetic number, because the mean of its divisors is an integer number (15637206).

Almost surely, 2^129671271 is an apocalyptic number.

129671271 is a deficient number, since it is larger than the sum of its proper divisors (57975201).

129671271 is a wasteful number, since it uses less digits than its factorization.

129671271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26430 (or 26427 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 129671271 is about 11387.3294059670. The cubic root of 129671271 is about 506.1523480602.

The spelling of 129671271 in words is "one hundred twenty-nine million, six hundred seventy-one thousand, two hundred seventy-one".