42289787871 has 96 divisors (see below), whose sum is σ = 66710105280. Its totient is φ = 25733376000.

The previous prime is 42289787849. The next prime is 42289787951. The reversal of 42289787871 is 17878798224.

42289787871 is a `hidden beast` number, since 422 + 8 + 9 + 78 + 78 + 71 = 666.

It is not a de Polignac number, because 42289787871 - 2⁶ = 42289787807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42289787799 and 42289787808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42289787801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 144333601 + ... + 144333893.

It is an arithmetic number, because the mean of its divisors is an integer number (694896930).

Almost surely, 2^42289787871 is an apocalyptic number.

42289787871 is a deficient number, since it is larger than the sum of its proper divisors (24420317409).

42289787871 is a wasteful number, since it uses less digits than its factorization.

42289787871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 614 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 63.

The spelling of 42289787871 in words is "forty-two billion, two hundred eighty-nine million, seven hundred eighty-seven thousand, eight hundred seventy-one".