542 is a member of the Fibonacci-type sequence starting with 3 and 8.
542 is 20132 in base 4 and 4132 in base 5. It is 392 in base 12 and 329 in base 13.
542 is the number of primes less than 104 having at least one digit 9 (A091710).
542 is the sum of no fewer than 17 fourth powers (A099591).
Source: What's Special About This Number?
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