204134321 has 8 divisors (see below), whose sum is σ = 206111400. Its totient is φ = 202165632.

The previous prime is 204134303. The next prime is 204134389. The reversal of 204134321 is 123431402.

It can be written as a sum of positive squares in 4 ways, for example, as 929296 + 203205025 = 964^2 + 14255^2 .

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 204134321 - 2²² = 199940017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204134293 and 204134302.

It is not an unprimeable number, because it can be changed into a prime (204131321) 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, 53741 + ... + 57413.

It is an arithmetic number, because the mean of its divisors is an integer number (25763925).

Almost surely, 2^204134321 is an apocalyptic number.

It is an amenable number.

204134321 is a deficient number, since it is larger than the sum of its proper divisors (1977079).

204134321 is a wasteful number, since it uses less digits than its factorization.

204134321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 204134321 is about 14287.5582588489. The cubic root of 204134321 is about 588.8057053357.

Adding to 204134321 its reverse (123431402), we get a palindrome (327565723).

The spelling of 204134321 in words is "two hundred four million, one hundred thirty-four thousand, three hundred twenty-one".