42718 has 16 divisors (see below), whose sum is σ = 72576. Its totient is φ = 18720.

The previous prime is 42709. The next prime is 42719. The reversal of 42718 is 81724.

It is a plaindrome in base 8.

It is a congruent number.

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

42718 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780 + ... + 832.

It is an arithmetic number, because the mean of its divisors is an integer number (4536).

2⁴²⁷¹⁸ is an apocalyptic number.

42718 is a deficient number, since it is larger than the sum of its proper divisors (29858).

42718 is a wasteful number, since it uses less digits than its factorization.

42718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99.

The product of its digits is 448, while the sum is 22.

The square root of 42718 is about 206.6833326613. The cubic root of 42718 is about 34.9572266598.

The spelling of 42718 in words is "forty-two thousand, seven hundred eighteen".