2021424242440 has 32 divisors (see below), whose sum is σ = 4548250693080. Its totient is φ = 808561492992.

The previous prime is 2021424242407. The next prime is 2021424242503. The reversal of 2021424242440 is 442424241202.

It can be written as a sum of positive squares in 4 ways, for example, as 598237277764 + 1423186964676 = 773458^2 + 1192974^2 .

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, 5134864 + ... + 5514496.

Almost surely, 2^{2021424242440} is an apocalyptic number.

2021424242440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021424242440 is an abundant number, since it is smaller than the sum of its proper divisors (2526826450640).

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

2021424242440 is a wasteful number, since it uses less digits than its factorization.

2021424242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512761 (or 512757 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 2021424242440 its reverse (442424241202), we get a palindrome (2463848483642).

The spelling of 2021424242440 in words is "two trillion, twenty-one billion, four hundred twenty-four million, two hundred forty-two thousand, four hundred forty".