129239 has 8 divisors (see below), whose sum is σ = 145920. Its totient is φ = 113400.

The previous prime is 129229. The next prime is 129263. The reversal of 129239 is 932921.

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

It is a cyclic number.

It is not a de Polignac number, because 129239 - 2⁴ = 129223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152 + ... + 530.

It is an arithmetic number, because the mean of its divisors is an integer number (18240).

2¹²⁹²³⁹ is an apocalyptic number.

129239 is a deficient number, since it is larger than the sum of its proper divisors (16681).

129239 is a wasteful number, since it uses less digits than its factorization.

129239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 972, while the sum is 26.

The square root of 129239 is about 359.4982614701. The cubic root of 129239 is about 50.5589286930.

It can be divided in two parts, 1292 and 39, that added together give a palindrome (1331).

The spelling of 129239 in words is "one hundred twenty-nine thousand, two hundred thirty-nine".