204612123 has 8 divisors (see below), whose sum is σ = 273706048. Its totient is φ = 135963144.

The previous prime is 204612101. The next prime is 204612127. The reversal of 204612123 is 321216402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204612123 - 2¹⁴ = 204595739 is a prime.

It is a super-2 number, since 2×204612123² = 83732241757134258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204612123.

It is not an unprimeable number, because it can be changed into a prime (204612127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110161 + ... + 112002.

It is an arithmetic number, because the mean of its divisors is an integer number (34213256).

Almost surely, 2^204612123 is an apocalyptic number.

204612123 is a deficient number, since it is larger than the sum of its proper divisors (69093925).

204612123 is a wasteful number, since it uses less digits than its factorization.

204612123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222473.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 204612123 is about 14304.2693976309. The cubic root of 204612123 is about 589.2647385990.

Adding to 204612123 its reverse (321216402), we get a palindrome (525828525).

The spelling of 204612123 in words is "two hundred four million, six hundred twelve thousand, one hundred twenty-three".