2104541405 has 4 divisors (see below), whose sum is σ = 2525449692. Its totient is φ = 1683633120.

The previous prime is 2104541381. The next prime is 2104541447. The reversal of 2104541405 is 5041454012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1679934169 + 424607236 = 40987^2 + 20606^2 .

It is not a de Polignac number, because 2104541405 - 2¹⁶ = 2104475869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210454136 + ... + 210454145.

It is an arithmetic number, because the mean of its divisors is an integer number (631362423).

Almost surely, 2^2104541405 is an apocalyptic number.

It is an amenable number.

2104541405 is a deficient number, since it is larger than the sum of its proper divisors (420908287).

2104541405 is an equidigital number, since it uses as much as digits as its factorization.

2104541405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420908286.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2104541405 is about 45875.2809800659. The cubic root of 2104541405 is about 1281.5016160050.

Adding to 2104541405 its reverse (5041454012), we get a palindrome (7145995417).

The spelling of 2104541405 in words is "two billion, one hundred four million, five hundred forty-one thousand, four hundred five".