2421317440 has 112 divisors (see below), whose sum is σ = 6130869120. Its totient is φ = 908236800.

The previous prime is 2421317411. The next prime is 2421317441. The reversal of 2421317440 is 447131242.

It is a junction number, because it is equal to n+sod(n) for n = 2421317399 and 2421317408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421317441) 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, 612109 + ... + 616051.

Almost surely, 2^2421317440 is an apocalyptic number.

2421317440 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 2421317440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3065434560).

2421317440 is an abundant number, since it is smaller than the sum of its proper divisors (3709551680).

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

2421317440 is a wasteful number, since it uses less digits than its factorization.

2421317440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080 (or 4070 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2421317440 is about 49206.8840712354. The cubic root of 2421317440 is about 1342.8182757942.

Adding to 2421317440 its reverse (447131242), we get a palindrome (2868448682).

It can be divided in two parts, 242131 and 7440, that added together give a triangular number (249571 = T₇₀₆).

The spelling of 2421317440 in words is "two billion, four hundred twenty-one million, three hundred seventeen thousand, four hundred forty".