Putting a uint8_t hex array into just one variable thats a string or integer

Using Arduino Programming Questions
#1 
uint8_t uid[] = { 0x04, 0x7E, 0x0B, 0x72, 0x44, 0x34, 0x84 };  

void setup() {
    Serial.begin(115200);
    delay(500);

This is a problem I have no clue how to tackle. Basically, I would like to turn the UID array into a non array integer variable of a string.

What I would like to do is

Serial.print(stringVariable);

out >> 047EOB72443484

or

Serial.print(intVariable);

out >> 4126111146852132      (decimal representation of the hex)

but I have no clue where or how to start

#2

Serial.print each byte individually if you want it in hex. If you want the decimal representation then you're going to have to do some math.

Serial.print(uid[0]);
Serial.print(uid[1]);
Serial.print(uid[2]);
//...etc...
#3

sprintf. Also does your leading zeroes for you.
It's a sledgehammer to crack a nut though

#4

Basically, I would like to turn the UID array into a non array integer variable of a string.

Why? It is trivial to compare arrays. Turning the array of bytes into something else for printing, storing in EEPROM, or comparing will NOT make the job easier.

#5