42288717842 has 18 divisors (see below), whose sum is σ = 73793049813. Its totient is φ = 18122863752.

The previous prime is 42288717839. The next prime is 42288717847. The reversal of 42288717842 is 24871788224.

It can be written as a sum of positive squares in 2 ways, for example, as 31297501921 + 10991215921 = 176911^2 + 104839^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145411.

It is not an unprimeable number, because it can be changed into a prime (42288717847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2025368 + ... + 2046140.

Almost surely, 2^42288717842 is an apocalyptic number.

42288717842 is a deficient number, since it is larger than the sum of its proper divisors (31504331971).

42288717842 is an frugal number, since it uses more digits than its factorization.

42288717842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41562 (or 20782 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 53.

The spelling of 42288717842 in words is "forty-two billion, two hundred eighty-eight million, seven hundred seventeen thousand, eight hundred forty-two".