  We employ Relativistic Mean Field (RMF) model with NL3 parametrization to
investigate the ground state properties of superheavy nucleus, Z = 124. The
nuclei selected (from among complete isotopic series) for detailed
investigation show that the nucleon density at the center is very low and
therefore, these nuclei can be treated as semi-bubble nuclei. The considerable
shell gap appears at neutron numbers N = 172, 184 and 198 showing the magicity
corresponding to these numbers. The results are compared with the
macro-microscopic Finite Range Droplet Model (FRDM) wherever possible.
