204193421 has 8 divisors (see below), whose sum is σ = 208328064. Its totient is φ = 200090880.

The previous prime is 204193411. The next prime is 204193441. The reversal of 204193421 is 124391402.

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 204193421 - 2⁶ = 204193357 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 (204193411) 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, 5036 + ... + 20826.

It is an arithmetic number, because the mean of its divisors is an integer number (26041008).

Almost surely, 2^204193421 is an apocalyptic number.

It is an amenable number.

204193421 is a deficient number, since it is larger than the sum of its proper divisors (4134643).

204193421 is a wasteful number, since it uses less digits than its factorization.

204193421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16051.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 204193421 is about 14289.6263422106. The cubic root of 204193421 is about 588.8625225976.

The spelling of 204193421 in words is "two hundred four million, one hundred ninety-three thousand, four hundred twenty-one".