204002004123 has 48 divisors (see below), whose sum is σ = 305878540032. Its totient is φ = 130908960000.

The previous prime is 204002004109. The next prime is 204002004139. The reversal of 204002004123 is 321400200402.

204002004123 is a `hidden beast` number, since 2 + 0 + 400 + 200 + 41 + 23 = 666.

It is not a de Polignac number, because 204002004123 - 2⁵ = 204002004091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204002004096 and 204002004105.

It is not an unprimeable number, because it can be changed into a prime (204002004103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78733558 + ... + 78736148.

It is an arithmetic number, because the mean of its divisors is an integer number (6372469584).

Almost surely, 2^204002004123 is an apocalyptic number.

204002004123 is a deficient number, since it is larger than the sum of its proper divisors (101876535909).

204002004123 is a wasteful number, since it uses less digits than its factorization.

204002004123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076 (or 5073 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 204002004123 its reverse (321400200402), we get a palindrome (525402204525).

The spelling of 204002004123 in words is "two hundred four billion, two million, four thousand, one hundred twenty-three".