1004211205 has 4 divisors (see below), whose sum is σ = 1205053452. Its totient is φ = 803368960.

The previous prime is 1004211203. The next prime is 1004211251. The reversal of 1004211205 is 5021124001.

1004211205 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 521574244 + 482636961 = 22838^2 + 21969^2 .

It is not a de Polignac number, because 1004211205 - 2¹ = 1004211203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004211203) 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, 100421116 + ... + 100421125.

It is an arithmetic number, because the mean of its divisors is an integer number (301263363).

Almost surely, 2^1004211205 is an apocalyptic number.

It is an amenable number.

1004211205 is a deficient number, since it is larger than the sum of its proper divisors (200842247).

1004211205 is an equidigital number, since it uses as much as digits as its factorization.

1004211205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200842246.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1004211205 is about 31689.2916456017. The cubic root of 1004211205 is about 1001.4017691252.

Adding to 1004211205 its reverse (5021124001), we get a palindrome (6025335206).

The spelling of 1004211205 in words is "one billion, four million, two hundred eleven thousand, two hundred five".