129233 has 4 divisors (see below), whose sum is σ = 139188. Its totient is φ = 119280.

The previous prime is 129229. The next prime is 129263. The reversal of 129233 is 332921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5329 + 123904 = 73^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 129233 - 2² = 129229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4958 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (34797).

2¹²⁹²³³ is an apocalyptic number.

129233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129233 is a deficient number, since it is larger than the sum of its proper divisors (9955).

129233 is an equidigital number, since it uses as much as digits as its factorization.

129233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9954.

The product of its digits is 324, while the sum is 20.

The square root of 129233 is about 359.4899164093. The cubic root of 129233 is about 50.5581462711.

The spelling of 129233 in words is "one hundred twenty-nine thousand, two hundred thirty-three".