2104081 has 4 divisors (see below), whose sum is σ = 2404672. Its totient is φ = 1803492.

The previous prime is 2104061. The next prime is 2104087. The reversal of 2104081 is 1804012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2104081 - 2⁷ = 2103953 is a prime.

It is a super-2 number, since 2×2104081² = 8854313709122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150285 + ... + 150298.

It is an arithmetic number, because the mean of its divisors is an integer number (601168).

2^2104081 is an apocalyptic number.

It is an amenable number.

2104081 is a deficient number, since it is larger than the sum of its proper divisors (300591).

2104081 is an equidigital number, since it uses as much as digits as its factorization.

2104081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300590.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2104081 is about 1450.5450699651. The cubic root of 2104081 is about 128.1408158941.

Adding to 2104081 its reverse (1804012), we get a palindrome (3908093).

The spelling of 2104081 in words is "two million, one hundred four thousand, eighty-one".