ISNONTEXT (Primitive Spread Function) tests for non-text data.

SYNTAX:

ISNONTEXT(value)

REMARKS:

Returns 1 (True) if the value argument is or refers to any item that is not text. (If the cell is empty, the function returns 1 (True).) Returns 0 (False) if the value argument is or refers to any item that is text. 

EXAMPLES:

ISNONTEXT(A3)
ISNONTEXT(12) = 1 (True)