function fixNumber(number) {
        if (number >= 0 && number < 10)
            return `0${number}`
        return number;
    }

    function minuteToHour(minute) {
        let hour = Math.floor(minute / 60);
        minute = minute - hour * 60;
        return `${fixNumber(hour)}:${fixNumber(minute)}`;
    }

console.log(minuteToHour(120)) // for test