Is PSP powerful than PS2?

I'm curious to know, is the PSP (PlayStation Portable) considered more powerful than the PS2 (PlayStation 2)? I've heard mixed opinions on this topic, and I'm looking for a clear answer. The PSP is a handheld device, while the PS2 is a home console, so it seems like they might not be directly comparable in terms of raw power. However, I'm interested in understanding the technical specifications and capabilities of both systems to determine which one might be considered more powerful. Can you provide me with a detailed explanation of how the two compare in this regard?