λ
Sequence Observatory

1,124,780

22 × 5 × 56239
Abundant Even Composite

Starting at 1,124,780, the Collatz iteration reaches 1 after 108 steps. The first transition is 562390; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 56239
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 2,362,080
Proper Divisor Sum 1,237,300
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #1124759 ← → #1124789

Radix Representation

Decimal 1124780
Binary 100010010100110101100 (21 bits)
Octal 0o4224654
Hexadecimal 0x1129AC

Divisor Catalog (12)

1 2 4 5 10 20 56,239 112,478 224,956 281,195 562,390 1,124,780

Collatz Trajectory (108 steps to reach 1)

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

1,124,780 562,390 281,195 843,586 421,793 1,265,380 632,690 316,345 949,036 474,518 237,259 711,778 355,889 1,067,668 533,834 266,917 800,752 400,376 200,188 100,094 50,047 150,142 75,071 225,214 112,607 337,822 168,911 506,734 253,367 760,102 380,051 1,140,154 570,077 1,710,232 855,116 427,558 213,779 641,338 320,669 962,008 481,004 240,502 120,251 360,754 180,377 541,132 270,566 135,283 405,850 202,925 608,776 304,388 152,194 76,097 228,292 114,146 57,073 171,220 85,610 42,805

More profiles

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