129

Properties by base:

Base 10129 (3 digits)
Digit Sum: 12
Digital Root: 3 happy
Base 20b10000001 (8 digits)
Digit Sum: 0b10
Digital Root: 0b1 always happy
Base 80201 (3 digits)
Digit Sum: 03
Digital Root: 03 sad
Base 160x81 (2 digits)
Digit Sum: 0x9
Digital Root: 0x9 happy

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 2 (2 unique) factors are:
3
43

Its 4 divisors are:
1
3
43
129
Its aliquote sum is:
47
makeing it a deficient number.

In HTML this number represents this color:  
#000081
 

In the work of Johann Sebastian Bach BWV 129 is Gelobet sei der Herr, mein Gott

The number appears at position 499 of the decimal digits of π surrounded by
2489122793818301194912983367336244065664308 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 935.304ms; cpu: 95.5420000000018ms)


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