82000041domain: NAppears in sequencesNumbers n such that d(n)*reversal(n)=sigma(n), where d(n) is number of positive divisors of n.at n=8A104907Numbers of the form 41*(2*10^n+1) where (2*10^n+1)/3 is prime (n is in the sequence A096507).at n=2A105323Numbers n such that sigma(n)=8*reversal(n).at n=7A115749