2 × 21491

Prime Factor Structure

Factorization String 2 × 21491

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 64,476

Proper Divisor Sum 21,494

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #42979 ← → #42989

1 2 21,491 42,982

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

42,982 21,491 64,474 32,237 96,712 48,356 24,178 12,089 36,268 18,134 9,067 27,202 13,601 40,804 20,402 10,201 30,604 15,302 7,651 22,954 11,477 34,432 17,216 8,608 4,304 2,152 1,076 538 269 808 404 202 101 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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