λ
Sigma Notebook

7,129,138

2 × 3564569
Deficient Even Composite

7,129,138 is even and not a perfect square. Its factorization is 2 × 3564569 and its 4 divisors sum to 10,693,710.

Prime Factor Structure

Factorization String 2 × 3564569
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 10,693,710
Proper Divisor Sum 3,564,572
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #7129127 ← → #7129159

Radix Representation

Decimal 7129138
Binary 11011001100100000110010 (23 bits)
Octal 0o33144062
Hexadecimal 0x6CC832

Divisor Catalog (4)

1 2 3,564,569 7,129,138

Collatz Trajectory (121 steps to reach 1)

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

7,129,138 3,564,569 10,693,708 5,346,854 2,673,427 8,020,282 4,010,141 12,030,424 6,015,212 3,007,606 1,503,803 4,511,410 2,255,705 6,767,116 3,383,558 1,691,779 5,075,338 2,537,669 7,613,008 3,806,504 1,903,252 951,626 475,813 1,427,440 713,720 356,860 178,430 89,215 267,646 133,823 401,470 200,735 602,206 301,103 903,310 451,655 1,354,966 677,483 2,032,450 1,016,225 3,048,676 1,524,338 762,169 2,286,508 1,143,254 571,627 1,714,882 857,441 2,572,324 1,286,162 643,081 1,929,244 964,622 482,311 1,446,934 723,467 2,170,402 1,085,201 3,255,604 1,627,802

More profiles

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