  In this article, we assign the newly reported state $X(3842)$ to be a D-wave
$\overline{c}c$ meson, and study its mass and decay constant with the QCD sum
rules by considering the contributions of the vacuum condensates up to
dimension-6 in the operator product expansion. The predicted mass
$M_{X(3842)}=(3.844^{+0.0675}_{-0.0823}\pm0.020)GeV$ is in agreement well with
the experimental data $M_{X(3842)}=(3842.71\pm0.16\pm0.12)MeV$ from the LHCb
collaboration. This result supports assigning $X(3842)$ to be a $1^{3}D_{3}$
charmonium meson. As the $1^{3}D_{3}$ $\overline{c}c$ meson, its predicted
strong decay width with the $^{3}P_{0}$ decay model is compatible with the
experimental data.
