2421243240 has 64 divisors (see below), whose sum is σ = 7822483200. Its totient is φ = 595997952.

The previous prime is 2421243217. The next prime is 2421243247. The reversal of 2421243240 is 423421242.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2421243240.

It is not an unprimeable number, because it can be changed into a prime (2421243247) 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 15 ways as a sum of consecutive naturals, for example, 774480 + ... + 777599.

It is an arithmetic number, because the mean of its divisors is an integer number (122226300).

Almost surely, 2^2421243240 is an apocalyptic number.

2421243240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421243240 is an abundant number, since it is smaller than the sum of its proper divisors (5401239960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2421243240 is a wasteful number, since it uses less digits than its factorization.

2421243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552106 (or 1552102 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2421243240 is about 49206.1301059126. The cubic root of 2421243240 is about 1342.8045590007.

Adding to 2421243240 its reverse (423421242), we get a palindrome (2844664482).

The spelling of 2421243240 in words is "two billion, four hundred twenty-one million, two hundred forty-three thousand, two hundred forty".