20424321413240 has 32 divisors (see below), whose sum is σ = 45955207997280. Its totient is φ = 8169642375552.

The previous prime is 20424321413219. The next prime is 20424321413311. The reversal of 20424321413240 is 4231412342402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20424321413197 and 20424321413206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215509 + ... + 6505851.

It is an arithmetic number, because the mean of its divisors is an integer number (1436100249915).

Almost surely, 2^{20424321413240} is an apocalyptic number.

20424321413240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424321413240 is an abundant number, since it is smaller than the sum of its proper divisors (25530886584040).

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

20424321413240 is a wasteful number, since it uses less digits than its factorization.

20424321413240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386871 (or 5386867 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 20424321413240 its reverse (4231412342402), we get a palindrome (24655733755642).

The spelling of 20424321413240 in words is "twenty trillion, four hundred twenty-four billion, three hundred twenty-one million, four hundred thirteen thousand, two hundred forty".