Interesting Number - 40 Your Teacher 7 years ago 40 is the only number in English that, when written out as a word, has its letters in alphabetical order. Forty (1 has its letters in alphabetical order - backwards. Try it!) Share this: Share on Facebook (Opens in new window) Facebook Share on Pinterest (Opens in new window) Pinterest Share on Threads (Opens in new window) Threads Share on Bluesky (Opens in new window) Bluesky Print (Opens in new window) Print Email a link to a friend (Opens in new window) Email Interesting Words - The alphabetDateJuly 19,In relation toVocabularyThe most dangerous letterDateMarch 21,In relation toFun with EnglishToday's LessonDateJuly 15,In relation toVocabulary