1200205 has 4 divisors (see below), whose sum is σ = 1440252. Its totient is φ = 960160.

The previous prime is 1200191. The next prime is 1200233. The reversal of 1200205 is 5020021.

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 178084 + 1022121 = 422^2 + 1011^2 .

It is not a de Polignac number, because 1200205 - 2⁷ = 1200077 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1200191 and 1200200.

It is a congruent 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, 120016 + ... + 120025.

It is an arithmetic number, because the mean of its divisors is an integer number (360063).

2^1200205 is an apocalyptic number.

It is an amenable number.

1200205 is a deficient number, since it is larger than the sum of its proper divisors (240047).

1200205 is an equidigital number, since it uses as much as digits as its factorization.

1200205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240046.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 1200205 is about 1095.5386802847. The cubic root of 1200205 is about 106.2719078239.

Adding to 1200205 its reverse (5020021), we get a palindrome (6220226).

The spelling of 1200205 in words is "one million, two hundred thousand, two hundred five".