401k and QDRO

My husband divorced and we had a QDRO.  He passed away and never named a new person on his life insurance or the 401k.  Neither one of us married, he had no children. Does it go to me his ex wife 

The terms of the plans would govern. 

1. Does the plan document automatically revoke beneficiary designations to a spouse upon divorce? Some do. 

2. If it does, (or there is no signed beneficiary form) the order of benefit named in the document governs. typically, spouse, children, sometimes parents, and then estate. I've never seen a document that includes ex-spouses in the order of default beneficiaries. So unless his parents are alive, likely whoever is getting the rest of his estate would get the money. 

1 hour ago, Susan knight said:

My husband divorced and we had a QDRO.  He passed away and never named a new person on his life insurance or the 401k.  Neither one of us married, he had no children. Does it go to me his ex wife 

Let's start with the obvious, what does the QDRO say?

It says that I give up my right to his retirement. 

But he didn't name anyone else. I was still on it. He didn't have a will either

Thank you for the information, that was helpful