421,981

7 × 23 × 2621

Prime Factor Structure

Factorization String 7 × 23 × 2621

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 8

Divisor Sum (σ) 503,424

Proper Divisor Sum 81,443

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #421973 ← → #421987

1 7 23 161 2,621 18,347 60,283 421,981

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

421,981 1,265,944 632,972 316,486 158,243 474,730 237,365 712,096 356,048 178,024 89,012 44,506 22,253 66,760 33,380 16,690 8,345 25,036 12,518 6,259 18,778 9,389 28,168 14,084 7,042 3,521 10,564 5,282 2,641 7,924 3,962 1,981 5,944 2,972 1,486 743 2,230 1,115 3,346 1,673 5,020 2,510 1,255 3,766 1,883 5,650 2,825 8,476 4,238 2,119 6,358 3,179 9,538 4,769 14,308 7,154 3,577 10,732 5,366 2,683

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