2421300440 has 64 divisors (see below), whose sum is σ = 5881528800. Its totient is φ = 891804672.

The previous prime is 2421300437. The next prime is 2421300449. The reversal of 2421300440 is 440031242.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421300449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212324 + ... + 223436.

Almost surely, 2^2421300440 is an apocalyptic number.

2421300440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421300440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2940764400).

2421300440 is an abundant number, since it is smaller than the sum of its proper divisors (3460228360).

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

2421300440 is a wasteful number, since it uses less digits than its factorization.

2421300440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556 (or 11552 counting only the distinct ones).

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

The square root of 2421300440 is about 49206.7113308744. The cubic root of 2421300440 is about 1342.8151331573.

Adding to 2421300440 its reverse (440031242), we get a palindrome (2861331682).

The spelling of 2421300440 in words is "two billion, four hundred twenty-one million, three hundred thousand, four hundred forty".