2421055405 has 4 divisors (see below), whose sum is σ = 2905266492. Its totient is φ = 1936844320.

The previous prime is 2421055379. The next prime is 2421055451. The reversal of 2421055405 is 5045501242.

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 740547369 + 1680508036 = 27213^2 + 40994^2 .

It is not a de Polignac number, because 2421055405 - 2⁷ = 2421055277 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, 242105536 + ... + 242105545.

It is an arithmetic number, because the mean of its divisors is an integer number (726316623).

Almost surely, 2^2421055405 is an apocalyptic number.

It is an amenable number.

2421055405 is a deficient number, since it is larger than the sum of its proper divisors (484211087).

2421055405 is an equidigital number, since it uses as much as digits as its factorization.

2421055405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484211086.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 2421055405 is about 49204.2214144274. The cubic root of 2421055405 is about 1342.7698341105.

Adding to 2421055405 its reverse (5045501242), we get a palindrome (7466556647).

The spelling of 2421055405 in words is "two billion, four hundred twenty-one million, fifty-five thousand, four hundred five".