Urban air mobility (UAM) including drones and electrical vertical take-off and landing (eVTOL) vehicles for the transport of people and goods is a long-term concept of urban development in the field of transportation. As with most aerial vehicles, the subject of noise generation is of major relevance here as well, since operation takes place in densely populated areas. The propellers are the main source of noise emissions of such vehicles. The aim of this project is to reduce the noise generated during vertical climb and descent, as well as hovering flight by geometrical modifications of the propeller blades. Numerous concepts in this regard have been developed in recent years, but no tailored combination of them, which is the focus of the present work. The validation of individual geometric adaptations in terms of aerodynamics and aeroacoustics in the far field as well as the advanced simulations in this regard were carried out using the CFD software OpenFOAM with an externally implemented aeroacoustics library. The optimisations and local adjustments of pitch angle, chord length and blade sweep as well as the addition of trailing edge serration, leading edge tubercles and tip modifications result in reduced tonal and broadband noise in the entire frequency spectrum in comparison to the reference propeller. Special attention has been paid to the combination of features with regard to radial positioning and aerodynamic as well as aeroacoustic effect strength so that they do not adversely counteract against each other. Examples of effective noise reducing combinations of geometrical modifications are presented in contrast to those showing inferior noise performances. The promising numerical results shall be experimentally verified in future research work.