We encrypt all FTP, email and database passwords so they are not visible as plain text inside your control panel.
The exception is the very first FTP account: this password is visible on the right hand side when you manage your hosting. If you're a hosting reseller, this also allows your Customer access to StackCP. You're able to change all passwords and changes are usually processed immediately.
Please note: the majority of database passwords will be saved in the configuration or connection strings for your website. For example, for WordPress, the database password is visible inside the wp-config.php file.