λ
Sigma Notebook

2,106,745

5 × 421349
Deficient Odd Composite

2,106,745 is odd and not a perfect square. Its factorization is 5 × 421349 and its 4 divisors sum to 2,528,100.

Prime Factor Structure

Factorization String 5 × 421349
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,528,100
Proper Divisor Sum 421,355
Digit Sum / Digital Root 25 (Root: 7)
Adjacent Primes #2106737 ← → #2106749

Radix Representation

Decimal 2106745
Binary 1000000010010101111001 (22 bits)
Octal 0o10022571
Hexadecimal 0x202579

Divisor Catalog (4)

1 5 421,349 2,106,745

Collatz Trajectory (272 steps to reach 1)

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

2,106,745 6,320,236 3,160,118 1,580,059 4,740,178 2,370,089 7,110,268 3,555,134 1,777,567 5,332,702 2,666,351 7,999,054 3,999,527 11,998,582 5,999,291 17,997,874 8,998,937 26,996,812 13,498,406 6,749,203 20,247,610 10,123,805 30,371,416 15,185,708 7,592,854 3,796,427 11,389,282 5,694,641 17,083,924 8,541,962 4,270,981 12,812,944 6,406,472 3,203,236 1,601,618 800,809 2,402,428 1,201,214 600,607 1,801,822 900,911 2,702,734 1,351,367 4,054,102 2,027,051 6,081,154 3,040,577 9,121,732 4,560,866 2,280,433 6,841,300 3,420,650 1,710,325 5,130,976 2,565,488 1,282,744 641,372 320,686 160,343 481,030

More profiles

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