λ
Sigma Notebook

1,320,261

3 × 440087
Deficient Odd Composite

1,320,261 is odd and not a perfect square. Its factorization is 3 × 440087 and its 4 divisors sum to 1,760,352.

Prime Factor Structure

Factorization String 3 × 440087
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 1,760,352
Proper Divisor Sum 440,091
Digit Sum / Digital Root 15 (Root: 6)
Adjacent Primes #1320251 ← → #1320287

Radix Representation

Decimal 1320261
Binary 101000010010101000101 (21 bits)
Octal 0o5022505
Hexadecimal 0x142545

Divisor Catalog (4)

1 3 440,087 1,320,261

Collatz Trajectory (98 steps to reach 1)

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

1,320,261 3,960,784 1,980,392 990,196 495,098 247,549 742,648 371,324 185,662 92,831 278,494 139,247 417,742 208,871 626,614 313,307 939,922 469,961 1,409,884 704,942 352,471 1,057,414 528,707 1,586,122 793,061 2,379,184 1,189,592 594,796 297,398 148,699 446,098 223,049 669,148 334,574 167,287 501,862 250,931 752,794 376,397 1,129,192 564,596 282,298 141,149 423,448 211,724 105,862 52,931 158,794 79,397 238,192 119,096 59,548 29,774 14,887 44,662 22,331 66,994 33,497 100,492 50,246

More profiles

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