129265 has 8 divisors (see below), whose sum is σ = 157248. Its totient is φ = 102000.

The previous prime is 129263. The next prime is 129277. The reversal of 129265 is 562921.

129265 is nontrivially palindromic in base 16.

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

It is not a de Polignac number, because 129265 - 2¹ = 129263 is a prime.

It is a Duffinian number.

129265 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (129263) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 390 + ... + 640.

It is an arithmetic number, because the mean of its divisors is an integer number (19656).

2¹²⁹²⁶⁵ is an apocalyptic number.

It is an amenable number.

129265 is a deficient number, since it is larger than the sum of its proper divisors (27983).

129265 is a wasteful number, since it uses less digits than its factorization.

129265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

The product of its digits is 1080, while the sum is 25.

The square root of 129265 is about 359.5344211616. The cubic root of 129265 is about 50.5623189080.

The spelling of 129265 in words is "one hundred twenty-nine thousand, two hundred sixty-five".