  The secondary component of the GW190814 event left us with a question,
"whether it is a supermassive neutron star or lightest black-hole?". Recently,
Fattoyev et al. have obtained an energy density functional (EDF) named as
BigApple, which reproduces the mass of the neutron star is 2.60 $M_\odot$ which
is well consistent with GW190814 data. This study explores the properties of
finite nuclei, nuclear matter, and neutron stars by using the BigApple EDF
along with four well-known relativistic mean-field forces, namely NL3, G3,
IOPB-I, and FSUGarnet. The finite nuclei properties like binding energy per
particle, skin thickness, charge radius, single-particle energy, and
two-neutron separation energy are well predicted by the BigApple for a series
of nuclei. The calculated nuclear matter quantities such as incompressibility,
symmetry energy, and slope parameters at saturation density are consistent with
the empirical or experimental values where ever available. The predicted
canonical tidal deformability by the BigApple parameter set is well-matched
with the GW190814 data. Also, the dimensionless moment of inertia lies in the
range given by the analysis of PSR J0737-3039A.
