201042104321 has 4 divisors (see below), whose sum is σ = 201043001172. Its totient is φ = 201041207472.

The previous prime is 201042104293. The next prime is 201042104339. The reversal of 201042104321 is 123401240102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 104433031921 + 96609072400 = 323161^2 + 310820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201042104321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201042104293 and 201042104302.

It is not an unprimeable number, because it can be changed into a prime (201042154321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214391 + ... + 669363.

It is an arithmetic number, because the mean of its divisors is an integer number (50260750293).

Almost surely, 2^201042104321 is an apocalyptic number.

It is an amenable number.

201042104321 is a deficient number, since it is larger than the sum of its proper divisors (896851).

201042104321 is an equidigital number, since it uses as much as digits as its factorization.

201042104321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896850.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201042104321 its reverse (123401240102), we get a palindrome (324443344423).

The spelling of 201042104321 in words is "two hundred one billion, forty-two million, one hundred four thousand, three hundred twenty-one".