2043240040 has 64 divisors (see below), whose sum is σ = 4679156160. Its totient is φ = 802813440.

The previous prime is 2043240019. The next prime is 2043240049. The reversal of 2043240040 is 400423402.

It is a super-2 number, since 2×2043240040² = 8349659722118403200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2043240049) 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, 1186380 + ... + 1188100.

It is an arithmetic number, because the mean of its divisors is an integer number (73111815).

Almost surely, 2^2043240040 is an apocalyptic number.

2043240040 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 2043240040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2339578080).

2043240040 is an abundant number, since it is smaller than the sum of its proper divisors (2635916120).

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

2043240040 is a wasteful number, since it uses less digits than its factorization.

2043240040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242 (or 2238 counting only the distinct ones).

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

The square root of 2043240040 is about 45202.2127776949. The cubic root of 2043240040 is about 1268.9362286920.

Adding to 2043240040 its reverse (400423402), we get a palindrome (2443663442).

The spelling of 2043240040 in words is "two billion, forty-three million, two hundred forty thousand, forty".