2043140240 has 40 divisors (see below), whose sum is σ = 5029733880. Its totient is φ = 769181696.

The previous prime is 2043140221. The next prime is 2043140261. The reversal of 2043140240 is 420413402.

It can be written as a sum of positive squares in 4 ways, for example, as 1019908096 + 1023232144 = 31936^2 + 31988^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749795 + ... + 752514.

It is an arithmetic number, because the mean of its divisors is an integer number (125743347).

Almost surely, 2^2043140240 is an apocalyptic number.

2043140240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043140240 is an abundant number, since it is smaller than the sum of its proper divisors (2986593640).

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

2043140240 is a wasteful number, since it uses less digits than its factorization.

2043140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502339 (or 1502333 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2043140240 is about 45201.1088359567. The cubic root of 2043140240 is about 1268.9155683853.

Adding to 2043140240 its reverse (420413402), we get a palindrome (2463553642).

The spelling of 2043140240 in words is "two billion, forty-three million, one hundred forty thousand, two hundred forty".