123 attempts to blend dance, romance, and comedy into a cohesive narrative. The story is straightforward, focusing on the lives of three dancer friends, which provides a light-hearted and entertaining premise. The screenplay maintains a casual tone but occasionally suffers from uneven pacing, with the first half being more engaging due to its humorous sequences and character introductions.

The second half slows down somewhat, with the narrative leaning heavily on romantic subplots that lack depth and fail to maintain the initial momentum. The songs, though choreographed well given the cast's dance background, do not leave a lasting impression musically, partly due to the absence of a credited music director. The background score is functional but does not significantly enhance the emotional or dramatic beats of the film.

Cinematography by Y. N. Murali captures the dance sequences with decent flair, but overall visual storytelling remains conventional. The film's strength lies in its dance performances and the chemistry among the lead actors, while the screenplay and music are its weaker aspects.

Prabhu Deva: Energetic and charismatic, showcasing his dance skills effectively.

Jyothika: Offers a charming presence with decent comic timing.

Raju Sundaram: Supports well with his dance and comic sequences.

Nagendra Prasad: Adequate in a supporting role, complements the trio.