2421056005 has 4 divisors (see below), whose sum is σ = 2905267212. Its totient is φ = 1936844800.

The previous prime is 2421055999. The next prime is 2421056081. The reversal of 2421056005 is 5006501242.

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 1667333889 + 753722116 = 40833^2 + 27454^2 .

It is not a de Polignac number, because 2421056005 - 2³ = 2421055997 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242105596 + ... + 242105605.

It is an arithmetic number, because the mean of its divisors is an integer number (726316803).

Almost surely, 2^2421056005 is an apocalyptic number.

It is an amenable number.

2421056005 is a deficient number, since it is larger than the sum of its proper divisors (484211207).

2421056005 is an equidigital number, since it uses as much as digits as its factorization.

2421056005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484211206.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2421056005 is about 49204.2275114649. The cubic root of 2421056005 is about 1342.7699450348.

Adding to 2421056005 its reverse (5006501242), we get a palindrome (7427557247).

The spelling of 2421056005 in words is "two billion, four hundred twenty-one million, fifty-six thousand, five".