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142857 (Number)The number 142,857 has some interesting mathematical properties. If you multiply the number by 2, 3, 4, 5 or 6 the answer will be an anagram of itself. | olspan=2|142857 | | a href="/encyclopedia/Cardinal-number" title="Cardinal number">Cardinal | One hundred forty-two thousand,
eight hundred and fifty-seven | | a href="/encyclopedia/Ordinal-number" title="Ordinal number">Ordinal | 142857th | | a href="/encyclopedia/Factorization" title="Factorization">Factorization | | | a href="/encyclopedia/Binary-numeral-system" title="Binary numeral system">Binary | 100010111000001001 | | a href="/encyclopedia/Hexadecimal" title="Hexadecimal">Hexadecimal | 22E09 | 1 x 142,857 = 142,857 2 x 142,857 = 285,714 3 x 142,857 = 428,571 4 x 142,857 = 571,428 5 x 142,857 = 714,285 6 x 142,857 = 857,142 7 x 142,857 = 999,999 If you continue multiplying it by larger numbers, the result will always be some sort of variation on 142857 or 999999. For example: 8 x 142,857 = 1,142,856 (Add the first digit and the last and you get 142857.) 42 x 142,857 = 5,999,994 142,857 x 142,857 = 20,408,122,449 (Add the first five digits to the last six and you get 142857.) If you divide it by 2 or by 5 you also get an anagram of itself with decimal point: 142,857 / 2 = 71,428.5 142,857 / 5 = 28,571.4 It is also similar to the first few digits of Pi. In base 10, 142,857 is a Harshad number and a Kaprekar number. It is derived from the fraction 1/7 = 0 . 142857 142857 14... 199e05 142857
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