204200321 has 8 divisors (see below), whose sum is σ = 220729320. Its totient is φ = 187788672.

The previous prime is 204200303. The next prime is 204200327. The reversal of 204200321 is 123002402.

It can be written as a sum of positive squares in 4 ways, for example, as 8620096 + 195580225 = 2936^2 + 13985^2 .

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 204200321 - 2⁶ = 204200257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204200296 and 204200305.

It is not an unprimeable number, because it can be changed into a prime (204200327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25700 + ... + 32693.

It is an arithmetic number, because the mean of its divisors is an integer number (27591165).

Almost surely, 2^204200321 is an apocalyptic number.

It is an amenable number.

204200321 is a deficient number, since it is larger than the sum of its proper divisors (16528999).

204200321 is a wasteful number, since it uses less digits than its factorization.

204200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58675.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 204200321 is about 14289.8677740559. The cubic root of 204200321 is about 588.8691553703.

Adding to 204200321 its reverse (123002402), we get a palindrome (327202723).

The spelling of 204200321 in words is "two hundred four million, two hundred thousand, three hundred twenty-one".