Value of an integer property.
Contains a valid value when propertyType is SerializedPropertyType.Integer.
For accessing sbyte, byte, short, ushort, int and uint properties. If you are accessing long or ulong properties use longValue instead.
When assigning a value to intValue, the value is clamped in the range of the property's declared type. For example, a property that is declared as a byte is clamped between 0 and 255.
Additional resources: longValue, propertyType, SerializedPropertyType.Integer.