129834085 has 8 divisors (see below), whose sum is σ = 159601176. Its totient is φ = 101333760.

The previous prime is 129834059. The next prime is 129834097. The reversal of 129834085 is 580438921.

It can be written as a sum of positive squares in 4 ways, for example, as 11437924 + 118396161 = 3382^2 + 10881^2 .

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

It is not a de Polignac number, because 129834085 - 2¹⁵ = 129801317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316464 + ... + 316873.

It is an arithmetic number, because the mean of its divisors is an integer number (19950147).

Almost surely, 2^129834085 is an apocalyptic number.

It is an amenable number.

129834085 is a deficient number, since it is larger than the sum of its proper divisors (29767091).

129834085 is an equidigital number, since it uses as much as digits as its factorization.

129834085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633383.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 129834085 is about 11394.4760739579. The cubic root of 129834085 is about 506.3640994663.

The spelling of 129834085 in words is "one hundred twenty-nine million, eight hundred thirty-four thousand, eighty-five".