42635 has 4 divisors (see below), whose sum is σ = 51168. Its totient is φ = 34104.

The previous prime is 42611. The next prime is 42641. The reversal of 42635 is 53624.

42635 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.

It is a cyclic number.

It is not a de Polignac number, because 42635 - 2⁶ = 42571 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42635.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259 + ... + 4268.

It is an arithmetic number, because the mean of its divisors is an integer number (12792).

2⁴²⁶³⁵ is an apocalyptic number.

42635 is a deficient number, since it is larger than the sum of its proper divisors (8533).

42635 is an equidigital number, since it uses as much as digits as its factorization.

42635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532.

The product of its digits is 720, while the sum is 20.

The square root of 42635 is about 206.4824447744. The cubic root of 42635 is about 34.9345716432.

The spelling of 42635 in words is "forty-two thousand, six hundred thirty-five".