There are a few ways to enable 2-factor authentication. One common approach is to send a text message to your phone containing an authentication token. Another option is to have an app installed that will generate that string of numbers without making you wait.
There are a few apps out there that will do the job. Google Authenticator is one. Another is Authy, which was acquired by Twilio a year ago. The latest version of the latter adds support for six, seven, and eight digit authentication tokens. Not only that, it makes those digits significantly easier to read.
Now instead of a single mass of numbers, spaces separate the characters. Some digits may also appear in bold. For six numbers, 462244 turns to 462 244. With seven, 8781561 becomes 87 815 61.
Another way to conceptualize the change is to think of your authentication token as two or three small numbers instead of one giant number. 27, 438, and 59 are easier to remember than 2,743,859. Well, I think so anyway. Maybe you're good with numbers larger than most of us ever see in our bank accounts.
Whatever your preference, the update is available in the Play Store. You can find the link below.