42659523 has 6 divisors (see below), whose sum is σ = 61619324. Its totient is φ = 28439676.

The previous prime is 42659479. The next prime is 42659527. The reversal of 42659523 is 32595624.

42659523 is a `hidden beast` number, since 42 + 6 + 595 + 23 = 666.

It is not a de Polignac number, because 42659523 - 2¹² = 42655427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42659527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2369965 + ... + 2369982.

Almost surely, 2^42659523 is an apocalyptic number.

42659523 is a deficient number, since it is larger than the sum of its proper divisors (18959801).

42659523 is a wasteful number, since it uses less digits than its factorization.

42659523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4739953 (or 4739950 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 42659523 is about 6531.4258014617. The cubic root of 42659523 is about 349.4126830321.

The spelling of 42659523 in words is "forty-two million, six hundred fifty-nine thousand, five hundred twenty-three".