the maximum data that cudaMempcy can tranfer between host and device

cudaStat1 = cudaMemcpy(d_csrRowdA, CsrRowndA, NNzA * sizeof(d_csrRowdA), cudaMemcpyHostToDevice);
    cudaStat2 = cudaMemcpy(d_csrColnA, CsrColndA, NNzA * sizeof(d_csrColnA), cudaMemcpyHostToDevice);

the value of NNzA is 1171620, i get an error in the second line. The error is: Exception thrown at 0x00007FFE874B4E6B(nvcuda.dll) (located in QRcpp.exe): 0xC0000005: An access violation occurred while reading location 0x0000015827EAF000.