42715 has 4 divisors (see below), whose sum is σ = 51264. Its totient is φ = 34168.

The previous prime is 42709. The next prime is 42719. The reversal of 42715 is 51724.

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 42715 - 2⁵ = 42683 is a prime.

It is a Duffinian number.

42715 is a lucky number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 42692 and 42701.

It is not an unprimeable number, because it can be changed into a prime (42719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4267 + ... + 4276.

It is an arithmetic number, because the mean of its divisors is an integer number (12816).

2⁴²⁷¹⁵ is an apocalyptic number.

42715 is a deficient number, since it is larger than the sum of its proper divisors (8549).

42715 is an equidigital number, since it uses as much as digits as its factorization.

42715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8548.

The product of its digits is 280, while the sum is 19.

The square root of 42715 is about 206.6760750547. The cubic root of 42715 is about 34.9564083151.

Subtracting 42715 from its reverse (51724), we obtain a palindrome (9009).

It can be divided in two parts, 42 and 715, that added together give a palindrome (757).

The spelling of 42715 in words is "forty-two thousand, seven hundred fifteen".