2420243 has 4 divisors (see below), whose sum is σ = 2766000. Its totient is φ = 2074488.

The previous prime is 2420237. The next prime is 2420251. The reversal of 2420243 is 3420242.

2420243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2420243 - 2⁶ = 2420179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2420213) 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 in 3 ways as a sum of consecutive naturals, for example, 172868 + ... + 172881.

It is an arithmetic number, because the mean of its divisors is an integer number (691500).

2^2420243 is an apocalyptic number.

2420243 is a deficient number, since it is larger than the sum of its proper divisors (345757).

2420243 is an equidigital number, since it uses as much as digits as its factorization.

2420243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345756.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2420243 is about 1555.7130198080. The cubic root of 2420243 is about 134.2619624831.

Adding to 2420243 its reverse (3420242), we get a palindrome (5840485).

Subtracting 2420243 from its reverse (3420242), we obtain a palindrome (999999).

The spelling of 2420243 in words is "two million, four hundred twenty thousand, two hundred forty-three".