1,229,986

2 × 67² × 137

1,229,986 has digital root 1. The neighboring primes are 1229981 and 1229993; its proper-divisor sum differs from the starting integer by -573,374.

Prime Factor Structure

Factorization String 2 × 67^2 × 137

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 12

Divisor Sum (σ) 1,886,598

Proper Divisor Sum 656,612

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #1229981 ← → #1229993

1 2 67 134 137 274 4,489 8,978 9,179 18,358 614,993 1,229,986

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

1,229,986 614,993 1,844,980 922,490 461,245 1,383,736 691,868 345,934 172,967 518,902 259,451 778,354 389,177 1,167,532 583,766 291,883 875,650 437,825 1,313,476 656,738 328,369 985,108 492,554 246,277 738,832 369,416 184,708 92,354 46,177 138,532 69,266 34,633 103,900 51,950 25,975 77,926 38,963 116,890 58,445 175,336 87,668 43,834 21,917 65,752 32,876 16,438 8,219 24,658 12,329 36,988 18,494 9,247 27,742 13,871 41,614 20,807 62,422 31,211 93,634 46,817