4043240 has 16 divisors (see below), whose sum is σ = 9097380. Its totient is φ = 1617280.

The previous prime is 4043233. The next prime is 4043243. The reversal of 4043240 is 423404.

It can be written as a sum of positive squares in 2 ways, for example, as 3865156 + 178084 = 1966^2 + 422^2 .

It is not an unprimeable number, because it can be changed into a prime (4043243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50501 + ... + 50580.

Almost surely, 2^4043240 is an apocalyptic number.

4043240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4043240 is an abundant number, since it is smaller than the sum of its proper divisors (5054140).

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

4043240 is a wasteful number, since it uses less digits than its factorization.

4043240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101092 (or 101088 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 4043240 is about 2010.7809428180. The cubic root of 4043240 is about 159.3100499154.

Adding to 4043240 its reverse (423404), we get a palindrome (4466644).

The spelling of 4043240 in words is "four million, forty-three thousand, two hundred forty".