204212245 has 8 divisors (see below), whose sum is σ = 259469784. Its totient is φ = 153759744.

The previous prime is 204212243. The next prime is 204212251. The reversal of 204212245 is 542212402.

It can be written as a sum of positive squares in 4 ways, for example, as 43784689 + 160427556 = 6617^2 + 12666^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204212245 - 2¹ = 204212243 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 (204212243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201164 + ... + 1201333.

It is an arithmetic number, because the mean of its divisors is an integer number (32433723).

Almost surely, 2^204212245 is an apocalyptic number.

It is an amenable number.

204212245 is a deficient number, since it is larger than the sum of its proper divisors (55257539).

204212245 is a wasteful number, since it uses less digits than its factorization.

204212245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402519.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 204212245 is about 14290.2849866614. The cubic root of 204212245 is about 588.8806172183.

Adding to 204212245 its reverse (542212402), we get a palindrome (746424647).

The spelling of 204212245 in words is "two hundred four million, two hundred twelve thousand, two hundred forty-five".