422,140

2² × 5 × 21107

Prime Factor Structure

Factorization String 2^2 × 5 × 21107

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Total Divisors 12

Divisor Sum (σ) 886,536

Proper Divisor Sum 464,396

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #422137 ← → #422141

1 2 4 5 10 20 21,107 42,214 84,428 105,535 211,070 422,140

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

422,140 211,070 105,535 316,606 158,303 474,910 237,455 712,366 356,183 1,068,550 534,275 1,602,826 801,413 2,404,240 1,202,120 601,060 300,530 150,265 450,796 225,398 112,699 338,098 169,049 507,148 253,574 126,787 380,362 190,181 570,544 285,272 142,636 71,318 35,659 106,978 53,489 160,468 80,234 40,117 120,352 60,176 30,088 15,044 7,522 3,761 11,284 5,642 2,821 8,464 4,232 2,116 1,058 529 1,588 794 397 1,192 596 298 149 448

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