2104013 has 2 divisors, whose sum is σ = 2104014.
Its totient is φ = 2104012.
The previous prime is 2103989. The next prime is 2104019. The reversal of 2104013 is 3104012.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2079364 + 24649 = 1442^2 + 157^2
It is a cyclic number.
It is not a de Polignac number, because 2104013 - 218 = 1841869 is a prime.
It is a Chen prime.
It is an Ulam number.
It is a junction number, because it is equal to n+sod(n) for n = 2103985 and 2104003.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2104019) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052006 + 1052007.
It is an arithmetic number, because the mean of its divisors is an integer number (1052007).
22104013 is an apocalyptic number.
It is an amenable number.
2104013 is a deficient number, since it is larger than the sum of its proper divisors (1).
2104013 is an equidigital number, since it uses as much as digits as its factorization.
2104013 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 24, while the sum is 11.
The square root of 2104013 is about 1450.5216303110.
The cubic root of 2104013 is about 128.1394354546.
Adding to 2104013 its reverse (3104012), we get a palindrome (5208025).
Subtracting 2104013 from its reverse (3104012), we obtain a palindrome (999999).
The spelling of 2104013 in words is "two million, one hundred four thousand, thirteen".