2421443 has 2 divisors, whose sum is σ = 2421444. Its totient is φ = 2421442.

The previous prime is 2421439. The next prime is 2421449. The reversal of 2421443 is 3441242.

2421443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2421443 - 2² = 2421439 is a prime.

It is not a weakly prime, because it can be changed into another prime (2421449) by changing a digit.

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 as a sum of consecutive naturals, namely, 1210721 + 1210722.

It is an arithmetic number, because the mean of its divisors is an integer number (1210722).

2^2421443 is an apocalyptic number.

2421443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421443 is an equidigital number, since it uses as much as digits as its factorization.

2421443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 20.

The square root of 2421443 is about 1556.0986472586. The cubic root of 2421443 is about 134.2841486485.

Adding to 2421443 its reverse (3441242), we get a palindrome (5862685).

The spelling of 2421443 in words is "two million, four hundred twenty-one thousand, four hundred forty-three".