We say 0 is nither prime nor composite ,nither negative nor positve.......then what is 0 actually??????????????? Share with your friends Share 0 Lalit Mehra answered this Hi! 0 is the smallest whole number. 0 is an integer also. Cheers! 4 View Full Answer Kshitij answered this 0 is an integer. 0 Nandhiga Ramani answered this A whole number 0 Nandhiga Ramani answered this Hi!0 is an integer which is neither positive nor negative and is the smallest whole number 0 Nachiket Paswan answered this 0 is an integer and also a smallest whole no.0 has no meaning after a point. 0