Mahlah (מַחְלָה) means "weakness" in Hebrew. In Numbers 27, Mahlah was the eldest of the five daughters of Zelophehad — who together successfully petitioned Moses for the right to inherit land, establishing women's inheritance rights in Israelite law.
Mahlah is rare but iconic among the daughters of Zelophehad.
Mahlah does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Mahlah reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.