204123420223 has 8 divisors (see below), whose sum is σ = 204462740592. Its totient is φ = 203784212736.

The previous prime is 204123420217. The next prime is 204123420247. The reversal of 204123420223 is 322024321402.

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 204123420223 - 2⁵ = 204123420191 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 (204123420253) 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, 4082511 + ... + 4132207.

It is an arithmetic number, because the mean of its divisors is an integer number (25557842574).

Almost surely, 2^204123420223 is an apocalyptic number.

204123420223 is a deficient number, since it is larger than the sum of its proper divisors (339320369).

204123420223 is an equidigital number, since it uses as much as digits as its factorization.

204123420223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56441.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 204123420223 its reverse (322024321402), we get a palindrome (526147741625).

The spelling of 204123420223 in words is "two hundred four billion, one hundred twenty-three million, four hundred twenty thousand, two hundred twenty-three".