1,227,921

3 × 397 × 1031

Starting at 1,227,921, the Collatz iteration reaches 1 after 142 steps. The first transition is 3683764; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 3 × 397 × 1031

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 1,642,944

Proper Divisor Sum 415,023

Digit Sum / Digital Root 24 (Root: 6)

Adjacent Primes #1227917 ← → #1227929

Radix Representation

Decimal	1227921
Binary	100101011110010010001 (21 bits)
Octal	0o4536221
Hexadecimal	0x12BC91

Divisor Catalog (8)

1 3 397 1,031 1,191 3,093 409,307 1,227,921

Collatz Trajectory (142 steps to reach 1)

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

1,227,921 3,683,764 1,841,882 920,941 2,762,824 1,381,412 690,706 345,353 1,036,060 518,030 259,015 777,046 388,523 1,165,570 582,785 1,748,356 874,178 437,089 1,311,268 655,634 327,817 983,452 491,726 245,863 737,590 368,795 1,106,386 553,193 1,659,580 829,790 414,895 1,244,686 622,343 1,867,030 933,515 2,800,546 1,400,273 4,200,820 2,100,410 1,050,205 3,150,616 1,575,308 787,654 393,827 1,181,482 590,741 1,772,224 886,112 443,056 221,528 110,764 55,382 27,691 83,074 41,537 124,612 62,306 31,153 93,460 46,730

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