Sarah lived to be 127 years old; this was how long she lived.
References for Genesis 23:1
She died in Kiriath-arba, that is, in Hebron, in the land of Canaan; and Abraham cried out in grief and wept for Sarah.
After he got up from embracing his deceased wife, he spoke with the Hittites:
"I am an immigrant and a temporary resident with you. Give me some property for a burial plot among you so that I can bury my deceased wife near me."
The Hittites responded to Abraham,
"Listen to us, sir. You are an eminent man of God among us. Bury your dead in one of our own select burial sites. None of us will keep our own burial plots from you to bury your dead."