λ
Sigma Notebook

142,218

2 × 32 × 7901
Abundant Even Composite

142,218 is even and not a perfect square. Its factorization is 2 × 3^2 × 7901 and its 12 divisors sum to 308,178.

Prime Factor Structure

Factorization String 2 × 3^2 × 7901
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 308,178
Proper Divisor Sum 165,960
Digit Sum / Digital Root 18 (Root: 9)
Adjacent Primes #142217 ← → #142223

Radix Representation

Decimal 142218
Binary 100010101110001010 (18 bits)
Octal 0o425612
Hexadecimal 0x22B8A

Divisor Catalog (12)

1 2 3 6 9 18 7,901 15,802 23,703 47,406 71,109 142,218

Collatz Trajectory (38 steps to reach 1)

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

142,218 71,109 213,328 106,664 53,332 26,666 13,333 40,000 20,000 10,000 5,000 2,500 1,250 625 1,876 938 469 1,408 704 352 176 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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