There is a two-digit number, it is smaller than 45, it is a multiple of 6, its 2 times is greater than 60, but it is not a multiple of 4, what is this number?
有一个两位数，它比45小，是6的倍数，它的2倍大于60，但它不是4的倍数，这个数是多少．
<result>42</result>