123,456,789

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Number

$123 \, 456 \, 789$ is:

$3^2 \times 3607 \times 3803$


Remains penholodigital when multiplied by $2$, $4$, $5$, $7$ and $8$


Also see


Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $123,456,789$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $123,456,789$
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