2143034440 has 32 divisors (see below), whose sum is σ = 4823903160. Its totient is φ = 856844800.

The previous prime is 2143034429. The next prime is 2143034447. The reversal of 2143034440 is 444303412.

It can be written as a sum of positive squares in 4 ways, for example, as 2122076356 + 20958084 = 46066^2 + 4578^2 .

It is a super-2 number, since 2×2143034440² = 9185193222052227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2143034447) 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 7 ways as a sum of consecutive naturals, for example, 94620 + ... + 115060.

Almost surely, 2^2143034440 is an apocalyptic number.

2143034440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143034440 is an abundant number, since it is smaller than the sum of its proper divisors (2680868720).

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

2143034440 is a wasteful number, since it uses less digits than its factorization.

2143034440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23073 (or 23069 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2143034440 is about 46292.9199770332. The cubic root of 2143034440 is about 1289.2675448540.

Adding to 2143034440 its reverse (444303412), we get a palindrome (2587337852).

The spelling of 2143034440 in words is "two billion, one hundred forty-three million, thirty-four thousand, four hundred forty".