2040421540 has 48 divisors (see below), whose sum is σ = 4532508288. Its totient is φ = 769976064.

The previous prime is 2040421529. The next prime is 2040421541. The reversal of 2040421540 is 451240402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2040421541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3199 + ... + 63961.

It is an arithmetic number, because the mean of its divisors is an integer number (94427256).

Almost surely, 2^2040421540 is an apocalyptic number.

2040421540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2040421540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2266254144).

2040421540 is an abundant number, since it is smaller than the sum of its proper divisors (2492086748).

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

2040421540 is a wasteful number, since it uses less digits than its factorization.

2040421540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60868 (or 60866 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2040421540 is about 45171.0254477359. The cubic root of 2040421540 is about 1268.3524920030.

Adding to 2040421540 its reverse (451240402), we get a palindrome (2491661942).

The spelling of 2040421540 in words is "two billion, forty million, four hundred twenty-one thousand, five hundred forty".