129675261 has 16 divisors (see below), whose sum is σ = 175852800. Its totient is φ = 84983808.

The previous prime is 129675253. The next prime is 129675317. The reversal of 129675261 is 162576921.

It is not a de Polignac number, because 129675261 - 2³ = 129675253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129679261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59845 + ... + 61973.

It is an arithmetic number, because the mean of its divisors is an integer number (10990800).

Almost surely, 2^129675261 is an apocalyptic number.

It is an amenable number.

129675261 is a deficient number, since it is larger than the sum of its proper divisors (46177539).

129675261 is a wasteful number, since it uses less digits than its factorization.

129675261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468.

The product of its digits is 45360, while the sum is 39.

The square root of 129675261 is about 11387.5045993405. The cubic root of 129675261 is about 506.1575394623.

The spelling of 129675261 in words is "one hundred twenty-nine million, six hundred seventy-five thousand, two hundred sixty-one".