204641423 has 4 divisors (see below), whose sum is σ = 233875920. Its totient is φ = 175406928.

The previous prime is 204641417. The next prime is 204641467. The reversal of 204641423 is 324146402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204641423 - 2⁴ = 204641407 is a prime.

It is a super-2 number, since 2×204641423² = 83756224014929858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204641392 and 204641401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204641473) 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 3 ways as a sum of consecutive naturals, for example, 14617238 + ... + 14617251.

It is an arithmetic number, because the mean of its divisors is an integer number (58468980).

Almost surely, 2^204641423 is an apocalyptic number.

204641423 is a deficient number, since it is larger than the sum of its proper divisors (29234497).

204641423 is an equidigital number, since it uses as much as digits as its factorization.

204641423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29234496.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 204641423 is about 14305.2935307179. The cubic root of 204641423 is about 589.2928643890.

Adding to 204641423 its reverse (324146402), we get a palindrome (528787825).

The spelling of 204641423 in words is "two hundred four million, six hundred forty-one thousand, four hundred twenty-three".