First of all, realize that "

even" is mathematically a concept

independent of bases. It simply means you get an

integer when you divide by 2 (or by 10 in the case of

binary.) But then, that doesn't allow this sort of

fun useless trivia, so let's assume for the purposes of this

node that ending in an even

digit makes the number

even.

Anyway, there are quite a few bases in which 42 is not "even" - 11, 13 (come on, how can you do 42-related trivia without considering base 13?), and any odd base from 23 to 41.

There is only one number that ends in an even digit in any base, and it's 2.

Oh. Hmm. I just realized that

ariels is converting the OTHER way, from base

n to

base 10. In this case, the number represented

must be even, yes. You're just taking 4 of something and adding 2. No place for anything

odd to figure into it. So any set of

even digits will be an

even number, when converting from any base to any

other.