Identify the number which does NOT satisfy: Sum of digits is a factor of the number.

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Accepted Answer

1. Find sum of digits:
   - 24 -> $2+4=6$
   - 36 -> $3+6=9$
   - 42 -> $4+2=6$
   - 39 -> $3+9=12$
2. Check if the sum divides the number:
   - $24\div6=4$, $36\div9=4$, $42\div6=7$, $39\div12=3.25$
3. Only 39 is not divisible by its digit sum. 
FINAL_ANSWER: d

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Answer

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