204423401 has 8 divisors (see below), whose sum is σ = 251598144. Its totient is φ = 161741520.

The previous prime is 204423397. The next prime is 204423403. The reversal of 204423401 is 104324402.

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 204423401 - 2² = 204423397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204423403) 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, 1123115 + ... + 1123296.

It is an arithmetic number, because the mean of its divisors is an integer number (31449768).

Almost surely, 2^204423401 is an apocalyptic number.

It is an amenable number.

204423401 is a deficient number, since it is larger than the sum of its proper divisors (47174743).

204423401 is a wasteful number, since it uses less digits than its factorization.

204423401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246431.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204423401 is about 14297.6711740059. The cubic root of 204423401 is about 589.0835153392.

Adding to 204423401 its reverse (104324402), we get a palindrome (308747803).

The spelling of 204423401 in words is "two hundred four million, four hundred twenty-three thousand, four hundred one".