MathQuarryCalculators

Numbers / 642

The Number 642

642 is composite: factorization 2 × 3 × 107. That gives 642 exactly 8 divisors: 1, 2, 3, 6, 107, 214, 321, 642. 642's proper divisors total 654, 12 more than 642 itself, so 642 is abundant. 642 has a digit sum of 12; for 642, the digital root works out to 3. 642: 2, 3, 6 all divide 642 evenly, out of 2-12. 642 is 1010000010 in binary and 282 in hex; as a Roman numeral it's DCXLII.

Factors
1, 2, 3, 6, 107, 214, 321, 642
Number of factors
8
Prime?
No
Prime factorization
2 x 3 x 107
Even or odd
Even
Square
412164
Cube
264609288
Binary
1010000010
Hexadecimal
282
Roman numeral
DCXLII
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No