Is there a Tanach available that is not divided into Prakim, rather into Pesuchos or Sedorim etc. ?
The nonJewish origin of the chapters is shown at Who Divided the Torah Into Weekly Readings, Chapters, and Verses?
The division of the Scriptures into chapters (perakim) was done by non-Jews in the thirteenth century. They did so to facilitate their bible study, to make it easier to recall the exact source for any given verse.
A Church Invention
Credit for dividing the Tanach into convenient chapter and verse generally goes to Cardinal Stephen Langton of France and England, who served as the Archbishop of Canterbury. He is thought to have created the chapters and verses in about 1205, which are used until this day. This was not too difficult a job since 617 out of his 779 chapters coincide with the parshiyos that existed since Sinai, while of the 162 chapters that he invented, many are illogical, while some border on the heretical.