angularjs 1.x: can I put a 'global' function in a .constant

Sometimes I have utility functions that I want to use globally that don't rely on dependency injection in an angularjs app.

I've wanted to throw them in a .constant(..) but I can't seem to find any documentation advocating this though I do remember someone advising against this. I was thinking something like so

angular.module('myApp', [])
   .constant('myFunction', myFunction);

function myFunction(msg) {
  alert(msg);
}

Other resources though suggest putting them into a factory or $rootScope. (example) The former feels verbose and the latter I have a distaste for.

Is it acceptable in angularjs 1.x best practices to use .constant to store global functions that don't rely on dependency injection?