40243243020 has 24 divisors (see below), whose sum is σ = 112681080624. Its totient is φ = 10731531456.

The previous prime is 40243243009. The next prime is 40243243049. The reversal of 40243243020 is 2034234204.

It is an unprimeable number.

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, 335360299 + ... + 335360418.

It is an arithmetic number, because the mean of its divisors is an integer number (4695045026).

Almost surely, 2^40243243020 is an apocalyptic number.

It is an amenable number.

40243243020 is an abundant number, since it is smaller than the sum of its proper divisors (72437837604).

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

40243243020 is a wasteful number, since it uses less digits than its factorization.

40243243020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670720729 (or 670720727 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 40243243020 its reverse (2034234204), we get a palindrome (42277477224).

The spelling of 40243243020 in words is "forty billion, two hundred forty-three million, two hundred forty-three thousand, twenty".