Which routing number did I use for direct deposit

You can review the direct deposit account information you entered by looking on your printed return. This will be found on your 1040 under the Refund section (look for line 76). 

If you have already filed, please follow the instructions in this FAQ to print your return:

https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-get-a-copy-of-a-return-i-filed-this-year-in-turbotax-online/00/25932

Now, if your recently-filed return is still in pending status, wait until it's either accepted or rejected. If rejected, simply open your return in TurboTax and go to the File section to update your bank account before re-submitting your return to the IRS.

Once your return has been accepted (or mailed), it's too late to change your bank account for direct deposit. If the info you provided is for a closed or invalid account, the government will just mail you a refund check.