20240442420440 has 96 divisors (see below), whose sum is σ = 51783577398000. Its totient is φ = 7106362179840.

The previous prime is 20240442420421. The next prime is 20240442420467. The reversal of 20240442420440 is 4402424404202.

It is a junction number, because it is equal to n+sod(n) for n = 20240442420397 and 20240442420406.

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 23 ways as a sum of consecutive naturals, for example, 71961530 + ... + 72242249.

Almost surely, 2^{20240442420440} is an apocalyptic number.

20240442420440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20240442420440 is an abundant number, since it is smaller than the sum of its proper divisors (31543134977560).

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

20240442420440 is a wasteful number, since it uses less digits than its factorization.

20240442420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144203841 (or 144203826 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 20240442420440 its reverse (4402424404202), we get a palindrome (24642866824642).

The spelling of 20240442420440 in words is "twenty trillion, two hundred forty billion, four hundred forty-two million, four hundred twenty thousand, four hundred forty".