204323421 has 8 divisors (see below), whose sum is σ = 284276160. Its totient is φ = 130293152.

The previous prime is 204323393. The next prime is 204323461. The reversal of 204323421 is 124323402.

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 204323421 - 2⁷ = 204323293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204323461) 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, 1480536 + ... + 1480673.

It is an arithmetic number, because the mean of its divisors is an integer number (35534520).

Almost surely, 2^204323421 is an apocalyptic number.

It is an amenable number.

204323421 is a deficient number, since it is larger than the sum of its proper divisors (79952739).

204323421 is a wasteful number, since it uses less digits than its factorization.

204323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961235.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 204323421 is about 14294.1743727996. The cubic root of 204323421 is about 588.9874627771.

Adding to 204323421 its reverse (124323402), we get a palindrome (328646823).

The spelling of 204323421 in words is "two hundred four million, three hundred twenty-three thousand, four hundred twenty-one".