412

Number
$412$ (four hundred and twelve) is:


 * $2^2 \times 103$


 * The $42$nd noncototient after $10, 26, 34, 50, \ldots, 344, 346, 362, 366, 372, 386, 394, 404$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 412$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $4$th positive integer $n$ after $157, 262, 367$ for which $\phi \left({2 n + 1}\right) < \phi \left({2 n}\right)$:
 * $\phi \left({2 \times 412 + 1}\right) = 400, \phi \left({2 \times 412}\right) = 408$