2421230443 has 4 divisors (see below), whose sum is σ = 2422152648. Its totient is φ = 2420308240.

The previous prime is 2421230431. The next prime is 2421230501. The reversal of 2421230443 is 3440321242.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2421230443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421237443) 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, 457153 + ... + 462418.

It is an arithmetic number, because the mean of its divisors is an integer number (605538162).

Almost surely, 2^2421230443 is an apocalyptic number.

2421230443 is a deficient number, since it is larger than the sum of its proper divisors (922205).

2421230443 is an equidigital number, since it uses as much as digits as its factorization.

2421230443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922204.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2421230443 is about 49206.0000711295. Note that the first 4 decimals coincide. The cubic root of 2421230443 is about 1342.8021932876.

Adding to 2421230443 its reverse (3440321242), we get a palindrome (5861551685).

The spelling of 2421230443 in words is "two billion, four hundred twenty-one million, two hundred thirty thousand, four hundred forty-three".