42,721,213

42721213

42,721,213 factors as 42721213. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 173 steps.

Prime Factor Structure

Factorization String 42721213

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 42,721,214

Proper Divisor Sum 1

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #42721201 ← → #42721229

Radix Representation

Decimal	42721213
Binary	10100010111101111110111101 (26 bits)
Octal	0o242757675
Hexadecimal	0x28BDFBD

Divisor Catalog (2)

1 42,721,213

Collatz Trajectory (173 steps to reach 1)

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

42,721,213 128,163,640 64,081,820 32,040,910 16,020,455 48,061,366 24,030,683 72,092,050 36,046,025 108,138,076 54,069,038 27,034,519 81,103,558 40,551,779 121,655,338 60,827,669 182,483,008 91,241,504 45,620,752 22,810,376 11,405,188 5,702,594 2,851,297 8,553,892 4,276,946 2,138,473 6,415,420 3,207,710 1,603,855 4,811,566 2,405,783 7,217,350 3,608,675 10,826,026 5,413,013 16,239,040 8,119,520 4,059,760 2,029,880 1,014,940 507,470 253,735 761,206 380,603 1,141,810 570,905 1,712,716 856,358 428,179 1,284,538 642,269 1,926,808 963,404 481,702 240,851 722,554 361,277 1,083,832 541,916 270,958

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