204642121323 has 8 divisors (see below), whose sum is σ = 272919092688. Its totient is φ = 136396615424.

The previous prime is 204642121283. The next prime is 204642121349. The reversal of 204642121323 is 323121246402.

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 204642121323 - 2⁹ = 204642120811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204642121393) 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, 7851186 + ... + 7877207.

It is an arithmetic number, because the mean of its divisors is an integer number (34114886586).

Almost surely, 2^204642121323 is an apocalyptic number.

204642121323 is a deficient number, since it is larger than the sum of its proper divisors (68276971365).

204642121323 is a wasteful number, since it uses less digits than its factorization.

204642121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15732733.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 204642121323 its reverse (323121246402), we get a palindrome (527763367725).

The spelling of 204642121323 in words is "two hundred four billion, six hundred forty-two million, one hundred twenty-one thousand, three hundred twenty-three".