Calculated Half-Lives of Superheavy Nuclei near[126]354

For nuclei in the region of of 126 protons and 228 neutrons we use the macroscopic-microscopic method to calculate fission barriers, $\alpha$-decay energies, and $\beta$-decay energies, as well as half-lives with respect to spontaneous fission and $\alpha$ decay. The nucleus ${}_{}{}^{354}{}_{}{}^{}\mathrm{}\left[126\right]\mathrm{}$ is found to be $\beta$ stable, but its spontaneous-fission half-life is only 39 ms and its $\alpha$-decay half-life is only 18 yr.