A139408 Numbers n such that phi(n)=d_1!!*d_2!!*...*d_k!! where d_1 d_2 ... d_k is the decimal expansion of n.
1, 260, 450, 543, 630, 1164, 2080, 3534, 3640, 4525, 5425, 11176, 13365, 15407, 18333, 24056, 24552, 25064, 25452, 26352, 30660, 37324, 45136, 46160, 46325, 49321, 51742, 52080, 54540, 67122, 76041, 76151, 80325, 81060, 81217, 81532
Offset: 1
Examples
phi(1111900875)=1!!*1!!*1!!*1!!*9!!*0!!*0!!*8!!*7!!*5!!, so 1111900875 is in the sequence.