2421345065 has 4 divisors (see below), whose sum is σ = 2905614084. Its totient is φ = 1937076048.

The previous prime is 2421345061. The next prime is 2421345097. The reversal of 2421345065 is 5605431242.

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 519338521 + 1902006544 = 22789^2 + 43612^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421345065 - 2² = 2421345061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2421345061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242134502 + ... + 242134511.

It is an arithmetic number, because the mean of its divisors is an integer number (726403521).

Almost surely, 2^2421345065 is an apocalyptic number.

It is an amenable number.

2421345065 is a deficient number, since it is larger than the sum of its proper divisors (484269019).

2421345065 is an equidigital number, since it uses as much as digits as its factorization.

2421345065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484269018.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2421345065 is about 49207.1647730287. The cubic root of 2421345065 is about 1342.8233825476.

The spelling of 2421345065 in words is "two billion, four hundred twenty-one million, three hundred forty-five thousand, sixty-five".