4,200,060,000 is four billion, two hundred million, sixty thousand in word form.
Convert a number to a US English word representation using this numbers to words converter.
We often use word names to write numbers. A word name for 42 is “forty-two.” The total number of weeks in a year, 52, is written as “fifty-two.”
For whole numbers with three digits, use the word “hundred” to describe how many hundreds there are in the number. For example, for the number of days in a normal year, 365, the digit 3 is in the hundreds place. The word name for the number is “three hundred sixty-five.”
For whole numbers with four digits, begin the name with the number of thousands, followed by the period name.
For word names of greater numbers, begin at the left with the greatest period. For each period, write the one- to three-digit number in the period, and then the period name.
See Montereyinstitute.org's Place Value and Names for Whole Numbers to learn more.
Except for a few basic rules, spelling out numbers vs. using figures (also called numerals) is largely a matter of writers' preference. Again, consistency is the key.
This is a complex topic, with many exceptions, and there is no consistency we can rely on among blogs, books, newspapers, and magazines. Check out the rules that all media seem to agree on from Grammarbook.com.