420,147

3⁵ × 7 × 13 × 19

Prime Factor Structure

Factorization String 3^5 × 7 × 13 × 19

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 48

Divisor Sum (σ) 815,360

Proper Divisor Sum 395,213

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #420103 ← → #420149

1 3 7 9 13 19 21 27 39 57 63 81 91 117 133 171 189 243 247 273 351 399 513 567 741 819 1,053 1,197 1,539 1,701 1,729 2,223 2,457 3,159 3,591 4,617 5,187 6,669 7,371 10,773 15,561 20,007 22,113 32,319 46,683 60,021 140,049 420,147

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

420,147 1,260,442 630,221 1,890,664 945,332 472,666 236,333 709,000 354,500 177,250 88,625 265,876 132,938 66,469 199,408 99,704 49,852 24,926 12,463 37,390 18,695 56,086 28,043 84,130 42,065 126,196 63,098 31,549 94,648 47,324 23,662 11,831 35,494 17,747 53,242 26,621 79,864 39,932 19,966 9,983 29,950 14,975 44,926 22,463 67,390 33,695 101,086 50,543 151,630 75,815 227,446 113,723 341,170 170,585 511,756 255,878 127,939 383,818 191,909 575,728

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