2043540340 has 48 divisors (see below), whose sum is σ = 4599084672. Its totient is φ = 760738176.

The previous prime is 2043540311. The next prime is 2043540341. The reversal of 2043540340 is 430453402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043540341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43014 + ... + 77053.

It is an arithmetic number, because the mean of its divisors is an integer number (95814264).

Almost surely, 2^2043540340 is an apocalyptic number.

2043540340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043540340 is an abundant number, since it is smaller than the sum of its proper divisors (2555544332).

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

2043540340 is a wasteful number, since it uses less digits than its factorization.

2043540340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120136 (or 120134 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 2043540340 is about 45205.5343956910. The cubic root of 2043540340 is about 1268.9983918699.

Adding to 2043540340 its reverse (430453402), we get a palindrome (2473993742).

The spelling of 2043540340 in words is "two billion, forty-three million, five hundred forty thousand, three hundred forty".