2421340231240 has 96 divisors (see below), whose sum is σ = 6362148249720. Its totient is φ = 826943373312.

The previous prime is 2421340231237. The next prime is 2421340231249. The reversal of 2421340231240 is 421320431242.

2421340231240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2414524407876 + 6815823364 = 1553874^2 + 82558^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2421340231199 and 2421340231208.

It is not an unprimeable number, because it can be changed into a prime (2421340231249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1899739 + ... + 2907178.

Almost surely, 2^{2421340231240} is an apocalyptic number.

2421340231240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421340231240 is an abundant number, since it is smaller than the sum of its proper divisors (3940808018480).

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

2421340231240 is a wasteful number, since it uses less digits than its factorization.

2421340231240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4807199 (or 4807188 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2421340231240 its reverse (421320431242), we get a palindrome (2842660662482).

The spelling of 2421340231240 in words is "two trillion, four hundred twenty-one billion, three hundred forty million, two hundred thirty-one thousand, two hundred forty".