λ
Sigma Notebook
140
22 × 5 × 7
Abundant Even Composite

Prime Factor Structure

Factorization String 2^2 × 5 × 7
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 336
Proper Divisor Sum 196
Digit Sum / Digital Root 5 (Root: 5)
Adjacent Primes #139 ← → #149

Radix Representation

Decimal 140
Binary 10001100 (8 bits)
Octal 0o214
Hexadecimal 0x8C

Divisor Catalog (12)

Collatz Trajectory (15 steps to reach 1)

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

Active Feeder Network

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.

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