λ
Sigma Notebook

2,121,425

52 × 84857
Deficient Odd Composite

2,121,425 is odd and not a perfect square. Its factorization is 5^2 × 84857 and its 6 divisors sum to 2,630,598.

Prime Factor Structure

Factorization String 5^2 × 84857
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 6
Divisor Sum (σ) 2,630,598
Proper Divisor Sum 509,173
Digit Sum / Digital Root 17 (Root: 8)
Adjacent Primes #2121403 ← → #2121433

Radix Representation

Decimal 2121425
Binary 1000000101111011010001 (22 bits)
Octal 0o10057321
Hexadecimal 0x205ED1

Divisor Catalog (6)

1 5 25 84,857 424,285 2,121,425

Collatz Trajectory (228 steps to reach 1)

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

2,121,425 6,364,276 3,182,138 1,591,069 4,773,208 2,386,604 1,193,302 596,651 1,789,954 894,977 2,684,932 1,342,466 671,233 2,013,700 1,006,850 503,425 1,510,276 755,138 377,569 1,132,708 566,354 283,177 849,532 424,766 212,383 637,150 318,575 955,726 477,863 1,433,590 716,795 2,150,386 1,075,193 3,225,580 1,612,790 806,395 2,419,186 1,209,593 3,628,780 1,814,390 907,195 2,721,586 1,360,793 4,082,380 2,041,190 1,020,595 3,061,786 1,530,893 4,592,680 2,296,340 1,148,170 574,085 1,722,256 861,128 430,564 215,282 107,641 322,924 161,462 80,731

More profiles

← Previous Integer #2,121,424 Browse Full Index Next Integer #2,121,426 →