134905 has 4 divisors (see below), whose sum is σ = 161892. Its totient is φ = 107920.

The previous prime is 134887. The next prime is 134909. The reversal of 134905 is 509431.

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 29929 + 104976 = 173^2 + 324^2 .

It is not a de Polignac number, because 134905 - 2⁵ = 134873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134909) 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, 13486 + ... + 13495.

It is an arithmetic number, because the mean of its divisors is an integer number (40473).

2¹³⁴⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

134905 is a deficient number, since it is larger than the sum of its proper divisors (26987).

134905 is an equidigital number, since it uses as much as digits as its factorization.

134905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26986.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 134905 is about 367.2941600407. The cubic root of 134905 is about 51.2872424125.

The spelling of 134905 in words is "one hundred thirty-four thousand, nine hundred five".