42587539 has 4 divisors (see below), whose sum is σ = 42600600. Its totient is φ = 42574480.

The previous prime is 42587509. The next prime is 42587551. The reversal of 42587539 is 93578524.

42587539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42587539 - 2¹³ = 42579347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42587495 and 42587504.

It is not an unprimeable number, because it can be changed into a prime (42587509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2919 + ... + 9679.

It is an arithmetic number, because the mean of its divisors is an integer number (10650150).

Almost surely, 2^42587539 is an apocalyptic number.

42587539 is a deficient number, since it is larger than the sum of its proper divisors (13061).

42587539 is an equidigital number, since it uses as much as digits as its factorization.

42587539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060.

The product of its digits is 302400, while the sum is 43.

The square root of 42587539 is about 6525.9128863325. The cubic root of 42587539 is about 349.2160385209.

The spelling of 42587539 in words is "forty-two million, five hundred eighty-seven thousand, five hundred thirty-nine".