204134100123 has 8 divisors (see below), whose sum is σ = 274984767568. Its totient is φ = 134686416384.

The previous prime is 204134100067. The next prime is 204134100139. The reversal of 204134100123 is 321001431402.

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

It is not a de Polignac number, because 204134100123 - 2¹² = 204134096027 is a prime.

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 204134100123.

It is not an unprimeable number, because it can be changed into a prime (204134100823) 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, 350745586 + ... + 350746167.

It is an arithmetic number, because the mean of its divisors is an integer number (34373095946).

Almost surely, 2^204134100123 is an apocalyptic number.

204134100123 is a deficient number, since it is larger than the sum of its proper divisors (70850667445).

204134100123 is an equidigital number, since it uses as much as digits as its factorization.

204134100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701491853.

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

Adding to 204134100123 its reverse (321001431402), we get a palindrome (525135531525).

The spelling of 204134100123 in words is "two hundred four billion, one hundred thirty-four million, one hundred thousand, one hundred twenty-three".