It's certainly not 1 million dollars although that would be great.
But if you have 3 million pennies you would have $30,000.00 which is still quite a bit of money from all those pennies.
That would be great to have that many pennies to cash in or deposit into the bank account but if it weren't for coin counting machines that would be bad to have to count out all of those pennies.
Now you can just dump those pennies into a coin counting machine and the machine will do all the work.
If you have 3 million pennies which is $30,000.00 I would certainly be moving them to a bank account or even a savings account.