1,240,220

2² × 5 × 62011

Starting at 1,240,220, the Collatz iteration reaches 1 after 111 steps. The first transition is 620110; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 62011

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 2,604,504

Proper Divisor Sum 1,364,284

Digit Sum / Digital Root 11 (Root: 2)

Adjacent Primes #1240219 ← → #1240231

Radix Representation

Decimal	1240220
Binary	100101110110010011100 (21 bits)
Octal	0o4566234
Hexadecimal	0x12EC9C

Divisor Catalog (12)

1 2 4 5 10 20 62,011 124,022 248,044 310,055 620,110 1,240,220

Collatz Trajectory (111 steps to reach 1)

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

1,240,220 620,110 310,055 930,166 465,083 1,395,250 697,625 2,092,876 1,046,438 523,219 1,569,658 784,829 2,354,488 1,177,244 588,622 294,311 882,934 441,467 1,324,402 662,201 1,986,604 993,302 496,651 1,489,954 744,977 2,234,932 1,117,466 558,733 1,676,200 838,100 419,050 209,525 628,576 314,288 157,144 78,572 39,286 19,643 58,930 29,465 88,396 44,198 22,099 66,298 33,149 99,448 49,724 24,862 12,431 37,294 18,647 55,942 27,971 83,914 41,957 125,872 62,936 31,468 15,734 7,867

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