129234 has 32 divisors (see below), whose sum is σ = 314496. Its totient is φ = 34560.

The previous prime is 129229. The next prime is 129263. The reversal of 129234 is 432921.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129234.

It is an unprimeable number.

129234 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624 + ... + 804.

It is an arithmetic number, because the mean of its divisors is an integer number (9828).

2¹²⁹²³⁴ is an apocalyptic number.

129234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157248).

129234 is an abundant number, since it is smaller than the sum of its proper divisors (185262).

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

129234 is a wasteful number, since it uses less digits than its factorization.

129234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its digits is 432, while the sum is 21.

The square root of 129234 is about 359.4913072663. The cubic root of 129234 is about 50.5582766764.

It can be divided in two parts, 1292 and 34, that added together give a triangular number (1326 = T₅₁).

The spelling of 129234 in words is "one hundred twenty-nine thousand, two hundred thirty-four".