129170 has 8 divisors (see below), whose sum is σ = 232524. Its totient is φ = 51664.

The previous prime is 129169. The next prime is 129187. The reversal of 129170 is 71921.

It can be written as a sum of positive squares in 2 ways, for example, as 128881 + 289 = 359^2 + 17^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6449 + ... + 6468.

2¹²⁹¹⁷⁰ is an apocalyptic number.

129170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129170 is a deficient number, since it is larger than the sum of its proper divisors (103354).

129170 is a wasteful number, since it uses less digits than its factorization.

129170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12924.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 129170 is about 359.4022815732. The cubic root of 129170 is about 50.5499293788.

The spelling of 129170 in words is "one hundred twenty-nine thousand, one hundred seventy".