42536517 has 8 divisors (see below), whose sum is σ = 56745600. Its totient is φ = 28342560.

The previous prime is 42536509. The next prime is 42536519. The reversal of 42536517 is 71563524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42536517 - 2³ = 42536509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42536519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8292 + ... + 12402.

It is an arithmetic number, because the mean of its divisors is an integer number (7093200).

Almost surely, 2^42536517 is an apocalyptic number.

It is an amenable number.

42536517 is a deficient number, since it is larger than the sum of its proper divisors (14209083).

42536517 is a wasteful number, since it uses less digits than its factorization.

42536517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7563.

The product of its digits is 25200, while the sum is 33.

The square root of 42536517 is about 6522.0025298983. The cubic root of 42536517 is about 349.0765233687.

Subtracting from 42536517 its sum of digits (33), we obtain a square (42536484 = 6522²).

The spelling of 42536517 in words is "forty-two million, five hundred thirty-six thousand, five hundred seventeen".