204001123 has 2 divisors, whose sum is σ = 204001124. Its totient is φ = 204001122.

The previous prime is 204001097. The next prime is 204001129. The reversal of 204001123 is 321100402.

204001123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204001123 is a prime.

It is a super-2 number, since 2×204001123² = 83232916370522258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204001129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102000561 + 102000562.

It is an arithmetic number, because the mean of its divisors is an integer number (102000562).

Almost surely, 2^204001123 is an apocalyptic number.

204001123 is a deficient number, since it is larger than the sum of its proper divisors (1).

204001123 is an equidigital number, since it uses as much as digits as its factorization.

204001123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 204001123 is about 14282.8961698950. The cubic root of 204001123 is about 588.6776118885.

Adding to 204001123 its reverse (321100402), we get a palindrome (525101525).

The spelling of 204001123 in words is "two hundred four million, one thousand, one hundred twenty-three".