The half-life, the branching ratio, and the decay Q value of the superallowed beta emitter Ti-42 were measured in an experiment performed at the JYFLTRAP facility of the Accelerator Laboratory of the University of Jyvaskyla. Ti-42 is the heaviest T-z = -1 nucleus for which high-precision measurements of these quantities have been tried. The half-life (T-1/2 = 208.14 +/- 0.45 ms) and the Q value [Q(EC) = 7016.83(25) keV] are close to or reach the required precision of about 0.1%. The branching ratio for the superallowed decay branch [BR = 47.7(12)%], a by-product of the half-life measurement, does not reach the necessary precision yet. Nonetheless, these results allow one to determine the experimental ft value and the corrected Ft value to be 3114(79) and 3122(79) s, respectively
