42517768 has 24 divisors (see below), whose sum is σ = 80672490. Its totient is φ = 21008000.

The previous prime is 42517759. The next prime is 42517789. The reversal of 42517768 is 86771524.

It can be written as a sum of positive squares in 3 ways, for example, as 42224004 + 293764 = 6498^2 + 542^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42517768.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81348 + ... + 81868.

Almost surely, 2^42517768 is an apocalyptic number.

It is an amenable number.

42517768 is a deficient number, since it is larger than the sum of its proper divisors (38154722).

42517768 is a wasteful number, since it uses less digits than its factorization.

42517768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 624 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 42517768 is about 6520.5650061939. The cubic root of 42517768 is about 349.0252278542.

The spelling of 42517768 in words is "forty-two million, five hundred seventeen thousand, seven hundred sixty-eight".