135259 has 4 divisors (see below), whose sum is σ = 138600. Its totient is φ = 131920.

The previous prime is 135257. The next prime is 135271. The reversal of 135259 is 952531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 952531 = 101 ⋅9431.

It is a cyclic number.

It is not a de Polignac number, because 135259 - 2¹ = 135257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1609 + ... + 1690.

It is an arithmetic number, because the mean of its divisors is an integer number (34650).

2¹³⁵²⁵⁹ is an apocalyptic number.

135259 is a deficient number, since it is larger than the sum of its proper divisors (3341).

135259 is an equidigital number, since it uses as much as digits as its factorization.

135259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340.

The product of its digits is 1350, while the sum is 25.

The square root of 135259 is about 367.7757468893. The cubic root of 135259 is about 51.3320636481.

The spelling of 135259 in words is "one hundred thirty-five thousand, two hundred fifty-nine".