1,189,965

3 × 5 × 7² × 1619

Starting at 1,189,965, the Collatz iteration reaches 1 after 173 steps. The first transition is 3569896; the starting value is odd with 24 positive divisors.

Prime Factor Structure

Factorization String 3 × 5 × 7^2 × 1619

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 2,216,160

Proper Divisor Sum 1,026,195

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #1189933 ← → #1189967

Radix Representation

Decimal	1189965
Binary	100100010100001001101 (21 bits)
Octal	0o4424115
Hexadecimal	0x12284D

Divisor Catalog (24)

1 3 5 7 15 21 35 49 105 147 245 735 1,619 4,857 8,095 11,333 24,285 33,999 56,665 79,331 169,995 237,993 396,655 1,189,965

Collatz Trajectory (173 steps to reach 1)

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

1,189,965 3,569,896 1,784,948 892,474 446,237 1,338,712 669,356 334,678 167,339 502,018 251,009 753,028 376,514 188,257 564,772 282,386 141,193 423,580 211,790 105,895 317,686 158,843 476,530 238,265 714,796 357,398 178,699 536,098 268,049 804,148 402,074 201,037 603,112 301,556 150,778 75,389 226,168 113,084 56,542 28,271 84,814 42,407 127,222 63,611 190,834 95,417 286,252 143,126 71,563 214,690 107,345 322,036 161,018 80,509 241,528 120,764 60,382 30,191 90,574 45,287

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