4043240555 has 4 divisors (see below), whose sum is σ = 4851888672. Its totient is φ = 3234592440.

The previous prime is 4043240549. The next prime is 4043240557. The reversal of 4043240555 is 5550423404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4043240555 - 2¹² = 4043236459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4043240557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404324051 + ... + 404324060.

It is an arithmetic number, because the mean of its divisors is an integer number (1212972168).

Almost surely, 2^4043240555 is an apocalyptic number.

4043240555 is a deficient number, since it is larger than the sum of its proper divisors (808648117).

4043240555 is an equidigital number, since it uses as much as digits as its factorization.

4043240555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808648116.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 4043240555 is about 63586.4809137917. The cubic root of 4043240555 is about 1593.1005720466.

Adding to 4043240555 its reverse (5550423404), we get a palindrome (9593663959).

The spelling of 4043240555 in words is "four billion, forty-three million, two hundred forty thousand, five hundred fifty-five".