42=2×3×7;
70=2×5×7,
The greatest common factor of 42,112,70 is 14, which can be divided into two piles.
There are 2 1 Chinese books, 56 math books and 35 English books in each pile.
Answer: It can be divided into two piles, each with 265,438+0 Chinese books, 56 math books and 35 English books.