135122665 has 4 divisors (see below), whose sum is σ = 162147204. Its totient is φ = 108098128.

The previous prime is 135122653. The next prime is 135122711. The reversal of 135122665 is 566221531.

135122665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 106564329 + 28558336 = 10323^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 135122665 - 2¹¹ = 135120617 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13512262 + ... + 13512271.

It is an arithmetic number, because the mean of its divisors is an integer number (40536801).

Almost surely, 2^135122665 is an apocalyptic number.

It is an amenable number.

135122665 is a deficient number, since it is larger than the sum of its proper divisors (27024539).

135122665 is an equidigital number, since it uses as much as digits as its factorization.

135122665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27024538.

The product of its digits is 10800, while the sum is 31.

The square root of 135122665 is about 11624.2275012149. The cubic root of 135122665 is about 513.1481104489.

The spelling of 135122665 in words is "one hundred thirty-five million, one hundred twenty-two thousand, six hundred sixty-five".