The first number on the left of a six-digit number is 1. If the number on the left is 1 and moved to the far right, then the new six-digit number is three times the original number. Find this number.
一个六位数左边第一个数字是1，如果把左边的这个数字是1移到最右边，那么新的六位数是原数的3倍，求这个数．
<result>142_857</result>