204000421 has 8 divisors (see below), whose sum is σ = 205888320. Its totient is φ = 202121472.

The previous prime is 204000383. The next prime is 204000427. The reversal of 204000421 is 124000402.

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 204000421 - 2¹¹ = 203998373 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 (204000427) 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, 48750 + ... + 52768.

It is an arithmetic number, because the mean of its divisors is an integer number (25736040).

Almost surely, 2^204000421 is an apocalyptic number.

It is an amenable number.

204000421 is a deficient number, since it is larger than the sum of its proper divisors (1887899).

204000421 is a wasteful number, since it uses less digits than its factorization.

204000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 204000421 is about 14282.8715950260. The cubic root of 204000421 is about 588.6769366436.

Adding to 204000421 its reverse (124000402), we get a palindrome (328000823).

The spelling of 204000421 in words is "two hundred four million, four hundred twenty-one", and thus it is an aban number.