Product details from product id Magento

<?php
$productObj = Mage::getModel(‘catalog/product’);
$_product = $productObj->load($productId);
echo $_product->getName();
echo $_product->getShortDescription();
echo $_product->getDescription();
echo $_product->getPrice();
echo $_product->getSpecialPrice();
echo $_product->getProductUrl();
echo $_product->getImageUrl()

?>