20242440420440 has 32 divisors (see below), whose sum is σ = 52051989653280. Its totient is φ = 6940265286912.

The previous prime is 20242440420439. The next prime is 20242440420481. The reversal of 20242440420440 is 4402404424202.

It is a junction number, because it is equal to n+sod(n) for n = 20242440420397 and 20242440420406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36147214757 + ... + 36147215316.

It is an arithmetic number, because the mean of its divisors is an integer number (1626624676665).

Almost surely, 2^{20242440420440} is an apocalyptic number.

20242440420440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20242440420440 is an abundant number, since it is smaller than the sum of its proper divisors (31809549232840).

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

20242440420440 is a wasteful number, since it uses less digits than its factorization.

20242440420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72294430091 (or 72294430087 counting only the distinct ones).

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

Adding to 20242440420440 its reverse (4402404424202), we get a palindrome (24644844844642).

The spelling of 20242440420440 in words is "twenty trillion, two hundred forty-two billion, four hundred forty million, four hundred twenty thousand, four hundred forty".