4042512789 has 24 divisors (see below), whose sum is σ = 6600025440. Its totient is φ = 2188426464.

The previous prime is 4042512767. The next prime is 4042512839. The reversal of 4042512789 is 9872152404.

It is not a de Polignac number, because 4042512789 - 2²³ = 4034124181 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4042512789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042512709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 720894 + ... + 726479.

It is an arithmetic number, because the mean of its divisors is an integer number (275001060).

Almost surely, 2^4042512789 is an apocalyptic number.

4042512789 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4042512789 is a deficient number, since it is larger than the sum of its proper divisors (2557512651).

4042512789 is a wasteful number, since it uses less digits than its factorization.

4042512789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447409 (or 1447402 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 4042512789 is about 63580.7580090077. The cubic root of 4042512789 is about 1593.0049825490.

The spelling of 4042512789 in words is "four billion, forty-two million, five hundred twelve thousand, seven hundred eighty-nine".