As such: two and four tenths.
Twenty-four.
I would write it as 1*10-24
Three forty five in the afternoon (am or pm is not "in words").
You can write it like 'twenty-four'.
four hundred sixty-one thousandths
I would write is as: one, point, one zero seven.
In words, the answer is one lakh twenty five thousand, exactly as in the question!
One hundred one.
One One Millionth
One billion.
One thousand, one.
You can write one hundred twelve thousand.