2421342443 has 12 divisors (see below), whose sum is σ = 2700629568. Its totient is φ = 2158003680.

The previous prime is 2421342433. The next prime is 2421342449. The reversal of 2421342443 is 3442431242.

It is not a de Polignac number, because 2421342443 - 2²⁶ = 2354233579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (2421342449) 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 11 ways as a sum of consecutive naturals, for example, 99803 + ... + 121668.

It is an arithmetic number, because the mean of its divisors is an integer number (225052464).

Almost surely, 2^2421342443 is an apocalyptic number.

2421342443 is a deficient number, since it is larger than the sum of its proper divisors (279287125).

2421342443 is a wasteful number, since it uses less digits than its factorization.

2421342443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221542 (or 221513 counting only the distinct ones).

The product of its digits is 18432, while the sum is 29.

The square root of 2421342443 is about 49207.1381305599. The cubic root of 2421342443 is about 1342.8228978468.

Adding to 2421342443 its reverse (3442431242), we get a palindrome (5863773685).

The spelling of 2421342443 in words is "two billion, four hundred twenty-one million, three hundred forty-two thousand, four hundred forty-three".