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We present $UBVRI$ photometry of 8702 stars in a $0.5 ^\circ\times0.5 ^\circ$field in the direction of NGC 7142, taken with the Half Degree Imager (HDI) atthe WIYN 0.9-meter telescope, to improve knowledge of this cluster's basicparameters. Our photometry spans the ranges 10.6 - 20.4 mag in $U$, 10.6 - 22.0mag in $B$, 10.0 - 21.8 mag in $V$, 9.2 - 20.7 mag in $R$, and 8.5 - 19.9 magin $I$. Using color-color diagrams that employ all four color combinations thatinclude $U$, versus $B-V$, we derive a reddening-metallicity relation for thecluster, with preferred values $E(B-V$) = 0.338 $\pm$ 0.031 mag for theleft-edge fiducial of the main sequence and [Fe/H] = 0.0 $\pm$ 0.1 dex, wherethe Hyades cluster has been used as an unreddened reference cluster, theextinction relations of Cardelli have been employed, and the metallicitydependence of the Yonsei-Yale ($Y^2$) isochrones has been assumed. Comparisonof our data to the $Y^2$ isochrones in multiple color-magnitude diagrams (CMDs)yields distance-metallicity and age-metallicity relations, with preferredvalues of $m-M\ =\ 12.65\ \pm\ 0.23$ mag and age = $4.0 ^{-0.7}_{+1.3}$ Gyr.Re-evaluation of the parameters of M67 using Stetson's $UBVI$ photometry yields[Fe/H] = -0.02 $\pm$ 0.05 dex, $E(B-V$) = 0.04 $\pm$ 0.01 mag, $m-M$ = 9.75$\pm$ 0.03 mag, and age = 3.85 $\pm$ 0.17 Gyr; we thus find the metallicity andage of the two clusters to be indistinguishable. A semi-independent analysisadopting the parameters of M67 and shifting the fiducials of the two clustersin six CMDs until they match strongly corroborates the values listed above. Thedifferences between our inferred parallaxes and the Gaia DR2 values are $87\\pm\ 60$ $\mu$as for NGC 7142 and 48 $\pm$ 15 $\mu$as for M67, consistent withprevious studies.

WIYN Open Cluster Study LXXX: HDI CCD $UBVRI$ Photometry of the Old Open Cluster NGC 7142 and Comparison to M67