130205 has 4 divisors (see below), whose sum is σ = 156252. Its totient is φ = 104160.

The previous prime is 130201. The next prime is 130211. The reversal of 130205 is 502031.

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 89401 + 40804 = 299^2 + 202^2 .

It is not a de Polignac number, because 130205 - 2² = 130201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130201) 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, 13016 + ... + 13025.

It is an arithmetic number, because the mean of its divisors is an integer number (39063).

2¹³⁰²⁰⁵ is an apocalyptic number.

It is an amenable number.

130205 is a deficient number, since it is larger than the sum of its proper divisors (26047).

130205 is an equidigital number, since it uses as much as digits as its factorization.

130205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26046.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 130205 is about 360.8392994118. The cubic root of 130205 is about 50.6845841139.

Adding to 130205 its reverse (502031), we get a palindrome (632236).

The spelling of 130205 in words is "one hundred thirty thousand, two hundred five".