magento admin login information

$user = Mage::getSingleton('admin/session');
echo $userId = $user->getUser()->getUserId();
echo "</br>";
echo $userEmail = $user->getUser()->getEmail();
echo "</br>";
$userFirstname = $user->getUser()->getFirstname();
$userLastname = $user->getUser()->getLastname();
$userUsername = $user->getUser()->getUsername();
$userPassword = $user->getUser()->getPassword();