  We perform numerical simulations of a model micromachine driven by catalytic
chemical reactions. Our model includes a mechano-chemical coupling between the
structural variables and the nonequilibrium variable describing the catalytic
reactions. The time-correlation functions of the structural variables are
calculated and further analyzed in terms of odd Langevin dynamics. We obtain
the effective odd elastic constant that manifests the broken time-reversal
symmetry of a catalytic micromachine. Within the simulation, we separately
estimate the quantity called nonreciprocality and show that its behavior is
similar to that of the odd elasticity.Our approach suggests a new method to
extract the nonequilibrium properties of a micromachine only by measuring its
structural dynamics.
