complentary

Awesome.
The number 43 is an interesting addition.
No
43 is the number of contention.

The number is written in Hebrew as a mem (40) and a gimel (3). Mem means "water," signifying a flow of history of time. Gimel is a camel, signifying elevation or glorification to a position of authority.

The number 43 symbolizes men contending for positions of authority.

The mem, the letter of “water” (mayim) symbolizes the fountain of the Divine Wisdom of Torah. Just as the waters of a physical fountain (spring) ascend from their unknown subterranean source (the secret of the abyss in the account of Creation) to reveal themselves on earth, so does the fountain of wisdom express the power of flow from the superconscious source.

The mem is by the thirteenth letter of the alef-beit. In Kabbalah we are taught that “thirteen mems,” as it were, appear in the “primordial air,” the (outer) “space” .

www.inner.org/hebleter/mem.htm

I heard somewhere mem also had to do with the moon, also being feminine or related to the feminine.

Yes, makes sense considering the moon's effect on tides.