1,119,920

2⁴ × 5 × 13999

Starting at 1,119,920, the Collatz iteration reaches 1 after 147 steps. The first transition is 559960; the starting value is even with 20 positive divisors.

Prime Factor Structure

Factorization String 2^4 × 5 × 13999

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 2,604,000

Proper Divisor Sum 1,484,080

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #1119913 ← → #1119947

Radix Representation

Decimal	1119920
Binary	100010001011010110000 (21 bits)
Octal	0o4213260
Hexadecimal	0x1116B0

Divisor Catalog (20)

1 2 4 5 8 10 16 20 40 80 13,999 27,998 55,996 69,995 111,992 139,990 223,984 279,980 559,960 1,119,920

Collatz Trajectory (147 steps to reach 1)

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

1,119,920 559,960 279,980 139,990 69,995 209,986 104,993 314,980 157,490 78,745 236,236 118,118 59,059 177,178 88,589 265,768 132,884 66,442 33,221 99,664 49,832 24,916 12,458 6,229 18,688 9,344 4,672 2,336 1,168 584 292 146 73 220 110 55 166 83 250 125 376 188 94 47 142 71 214 107 322 161 484 242 121 364 182 91 274 137 412 206

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