134805 has 32 divisors (see below), whose sum is σ = 253440. Its totient is φ = 60480.

The previous prime is 134789. The next prime is 134807. The reversal of 134805 is 508431.

It is not a de Polignac number, because 134805 - 2⁴ = 134789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3114 + ... + 3156.

It is an arithmetic number, because the mean of its divisors is an integer number (7920).

2¹³⁴⁸⁰⁵ is an apocalyptic number.

134805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134805 is a deficient number, since it is larger than the sum of its proper divisors (118635).

134805 is a wasteful number, since it uses less digits than its factorization.

134805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 134805 is about 367.1580041345. The cubic root of 134805 is about 51.2745668458.

It can be divided in two parts, 134 and 805, that added together give a palindrome (939).

The spelling of 134805 in words is "one hundred thirty-four thousand, eight hundred five".