The invention relates to the soybean variety designated A1026742. Provided by the invention are the seeds, plants and derivatives of the soybean variety A1026742. Also provided by the invention are tissue cultures of the soybean variety A1026742 and the plants regenerated therefrom. Still further provided by the invention are methods for producing soybean plants by crossing the soybean variety A1026742 with itself or another soybean variety and plants produced by such methods.
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