λ
Sequence Observatory

1,920,141

32 × 213349
Deficient Odd Composite

Starting at 1,920,141, the Collatz iteration reaches 1 after 96 steps. The first transition is 5760424; the starting value is odd with 6 positive divisors.

Prime Factor Structure

Factorization String 3^2 × 213349
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 6
Divisor Sum (σ) 2,773,550
Proper Divisor Sum 853,409
Digit Sum / Digital Root 18 (Root: 9)
Adjacent Primes #1920101 ← → #1920143

Radix Representation

Decimal 1920141
Binary 111010100110010001101 (21 bits)
Octal 0o7246215
Hexadecimal 0x1D4C8D

Divisor Catalog (6)

1 3 9 213,349 640,047 1,920,141

Collatz Trajectory (96 steps to reach 1)

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

1,920,141 5,760,424 2,880,212 1,440,106 720,053 2,160,160 1,080,080 540,040 270,020 135,010 67,505 202,516 101,258 50,629 151,888 75,944 37,972 18,986 9,493 28,480 14,240 7,120 3,560 1,780 890 445 1,336 668 334 167 502 251 754 377 1,132 566 283 850 425 1,276 638 319 958 479 1,438 719 2,158 1,079 3,238 1,619 4,858 2,429 7,288 3,644 1,822 911 2,734 1,367 4,102 2,051

More profiles

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