Effective single-particle potentials obtained from the established nonrelativistic nuclear energy density functional approach are incorporated into the microscopic-macroscopic method to calculate the ground-state shell corrections, mass excesses, and Q(alpha) values for heaviest nuclei. The low-lying one-quasiparticle states are studied in the isotonic chains with neutron numbers N = 175, 176, and 177. The isomeric states are discussed in the odd isotopes. The possible alpha-decay chains of nuclei (295)119 and (295,297)120 are analyzed and compared with the available experimental data. The termination of the alpha-decay chains by spontaneous fission is analyzed. The production cross sections are calculated for superheavy nuclei with 112 <= Z <= 120 in the actinide-based complete fusion reactions with projectiles Ca-48, Ti-48,Ti-50, Cr-54, Fe-58, and( 64)Ni.
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