129834 has 12 divisors (see below), whose sum is σ = 281346. Its totient is φ = 43272.

The previous prime is 129803. The next prime is 129841. The reversal of 129834 is 438921.

It can be written as a sum of positive squares in only one way, i.e., 91809 + 38025 = 303^2 + 195^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 129798 and 129807.

It is an unprimeable number.

129834 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3589 + ... + 3624.

2¹²⁹⁸³⁴ is an apocalyptic number.

129834 is an abundant number, since it is smaller than the sum of its proper divisors (151512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129834 is a wasteful number, since it uses less digits than its factorization.

129834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221 (or 7218 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 129834 is about 360.3248534309. The cubic root of 129834 is about 50.6363988964.

The spelling of 129834 in words is "one hundred twenty-nine thousand, eight hundred thirty-four".