Dodecaswirlic octacositetracontachoron

The dodecaswirlic octacositetracontachoron, also known as the doeswirl 840, is an isochoric polychoron with 840 identical cells. It is the seventh in an infinite family of isochoric dodecahedral swirlchora.

Each cell of this polychoron has chiral pentagonal prismatic symmetry, with 2 pentagonal-symmetric pentadecagons, 10 mirror-symmetric pentagons, and 10 tetragons for faces.