2040240340 has 12 divisors (see below), whose sum is σ = 4284504756. Its totient is φ = 816096128.

The previous prime is 2040240331. The next prime is 2040240403. The reversal of 2040240340 is 430420402.

It can be written as a sum of positive squares in 2 ways, for example, as 1029254724 + 1010985616 = 32082^2 + 31796^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 51005989 + ... + 51006028.

It is an arithmetic number, because the mean of its divisors is an integer number (357042063).

Almost surely, 2^2040240340 is an apocalyptic number.

2040240340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040240340 is an abundant number, since it is smaller than the sum of its proper divisors (2244264416).

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

2040240340 is a wasteful number, since it uses less digits than its factorization.

2040240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102012026 (or 102012024 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 2040240340 is about 45169.0196927053. The cubic root of 2040240340 is about 1268.3149454682.

Adding to 2040240340 its reverse (430420402), we get a palindrome (2470660742).

The spelling of 2040240340 in words is "two billion, forty million, two hundred forty thousand, three hundred forty".