λ
Sigma Notebook

667,142

2 × 7 × 47653
Deficient Even Composite

667,142 is even and not a perfect square. Its factorization is 2 × 7 × 47653 and its 8 divisors sum to 1,143,696.

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Prime Factor Structure

Factorization String 2 × 7 × 47653
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 1,143,696
Proper Divisor Sum 476,554
Digit Sum / Digital Root 26 (Root: 8)
Adjacent Primes #667141 ← → #667171

Radix Representation

Decimal 667142
Binary 10100010111000000110 (20 bits)
Octal 0o2427006
Hexadecimal 0xA2E06

Divisor Catalog (5 of 8)

Collatz Trajectory (92 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

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