2,141,456

2⁴ × 17 × 7873

Starting at 2,141,456, the Collatz iteration reaches 1 after 148 steps. The first transition is 1070728; the starting value is even with 20 positive divisors.

Prime Factor Structure

Factorization String 2^4 × 17 × 7873

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 4,393,692

Proper Divisor Sum 2,252,236

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #2141437 ← → #2141459

Radix Representation

Decimal	2141456
Binary	1000001010110100010000 (22 bits)
Octal	0o10126420
Hexadecimal	0x20AD10

Divisor Catalog (20)

Collatz Trajectory (148 steps to reach 1)

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

2,141,456 1,070,728 535,364 267,682 133,841 401,524 200,762 100,381 301,144 150,572 75,286 37,643 112,930 56,465 169,396 84,698 42,349 127,048 63,524 31,762 15,881 47,644 23,822 11,911 35,734 17,867 53,602 26,801 80,404 40,202 20,101 60,304 30,152 15,076 7,538 3,769 11,308 5,654 2,827 8,482 4,241 12,724 6,362 3,181 9,544 4,772 2,386 1,193 3,580 1,790 895 2,686 1,343 4,030 2,015 6,046 3,023 9,070 4,535 13,606

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