1,421,206

2 × 710603

1,421,206 has digital root 7. The neighboring primes are 1421191 and 1421213; its proper-divisor sum differs from the starting integer by -710,600.

Prime Factor Structure

Factorization String 2 × 710603

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,131,812

Proper Divisor Sum 710,606

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #1421191 ← → #1421213

Radix Representation

Decimal	1421206
Binary	101011010111110010110 (21 bits)
Octal	0o5327626
Hexadecimal	0x15AF96

Divisor Catalog (4)

1 2 710,603 1,421,206

Collatz Trajectory (212 steps to reach 1)

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

1,421,206 710,603 2,131,810 1,065,905 3,197,716 1,598,858 799,429 2,398,288 1,199,144 599,572 299,786 149,893 449,680 224,840 112,420 56,210 28,105 84,316 42,158 21,079 63,238 31,619 94,858 47,429 142,288 71,144 35,572 17,786 8,893 26,680 13,340 6,670 3,335 10,006 5,003 15,010 7,505 22,516 11,258 5,629 16,888 8,444 4,222 2,111 6,334 3,167 9,502 4,751 14,254 7,127 21,382 10,691 32,074 16,037 48,112 24,056 12,028 6,014 3,007 9,022

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