43240639003 has 4 divisors (see below), whose sum is σ = 44409304960. Its totient is φ = 42071973048.

The previous prime is 43240638967. The next prime is 43240639007. The reversal of 43240639003 is 30093604234.

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

It is a cyclic number.

It is not a de Polignac number, because 43240639003 - 2⁹ = 43240638491 is a prime.

It is a super-2 number, since 2×43240639003² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43240639003.

It is not an unprimeable number, because it can be changed into a prime (43240639007) 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 3 ways as a sum of consecutive naturals, for example, 584332923 + ... + 584332996.

It is an arithmetic number, because the mean of its divisors is an integer number (11102326240).

Almost surely, 2^43240639003 is an apocalyptic number.

43240639003 is a deficient number, since it is larger than the sum of its proper divisors (1168665957).

43240639003 is a wasteful number, since it uses less digits than its factorization.

43240639003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168665956.

The product of its (nonzero) digits is 46656, while the sum is 34.

The spelling of 43240639003 in words is "forty-three billion, two hundred forty million, six hundred thirty-nine thousand, three".