How much is "Elef Shanim Pa'amayim"?
Rashi: It is 2,000 years.
Ibn Ezra: It is Elef Alafim (a million), just like Esrim Pa'amayim are 4000 (20 times 20).
Why does it mention living Elef Shanim Pa'amayim?
Rashi: Even if he would live so long, since he did not see good, he will return to the earth like other Aniyim.
Rashbam: Since he did not see good, there is no praise in living so long.
What is the meaning of "v'Tovah Lo Ra'ah"?
Rav Sadya Gaon: He did not attain good.
Seforno: [Even if he was not pained, since] he did not attain the hope of eternity
Why does it say "El Makom Echad ha'Kol Holech"?
Ri Kara: The man and Nefel go to the same place (the grave).
Rid: One who did not see good, he goes to the same place as one who saw good his entire life. The verses demean three kinds of wealth - monetary (1), many children (3), and long life.
Seforno: Everything goes to one level of perishing - the intellectual Nefesh with the Nefesh of Chiyus and its powers. It did not attain the purpose of the merit of life, to acquire eternity and its happiness.
Metzudas David: What benefit did he get from his longevity? When he dies, he returns to the earth (grave) like others [who did not live so long]!
