A Mysterious Number

The number 142,857 does not at first sight appear to have anything odd about it, yet there are some strange things about it. Let us multiply it by the 'mimbers 2 to 7 and see the result: 143,857 by 2 is 285,714. 142,857 by 3 is 428,571. 142,857 by 4 is 571,428. 142,857 by 5 is 714,285. 142,57 by (i is X57.142. 142,857 by 7 Is 9,999. The first flve producís, you will observe, are coinposed not only oí the same figures, but of the same figures in the same order, though begining with a different figure each time. And the strangest part of it all is that 142,857 multiplied by 7 is 999,999, but after that point the products lose their oddity.