In Mathematics some numbers have some special properties

Number 37

37 X 3=11 1  37 X 6 = 222  37 X 9 = 333  37 X 12 = 444  37 X 15 = 555  37 X 18 = 666  37 x 21 = 777  37 X 24 = 888  37 X 27 = 999

when multiplied by 3 and its multiples:

Number 37037

37037 X 3 = 111111  37037 X 6 = 222222  37037 X 9 = 333333  37037 X 12 = 444444 37037 X 15 = 555555 37037 X 18 = 666666 37037 X 21 = 777777 37037 X 24 = 888888 37037 X 27 = 999999

The Revolving Number — 142857

Multiply 142857 by numbers from 1 to 6 142857 x 1=142857 142857 x 2=285174 142857 x 3=428571 142857 x 4=571428 142857 x 5=714285 142857 x 6=857142

You will see that the numbers start revolving — the same digits in different combinations

Number 12345679

Multiply by 9 and its multiples 12345679 x 9=111111111 12345679 X 18 = 222 222 222 12345679 X 27 = 333 333 333 12345679 X 36 = 444 444 444 12345679 x 45 = 555 555 555 12345679 X 54 = 666 666 666 12345679 X 63 = 777 777 777 12345679 x 72 = 888 888 8§8 12345679 x 81 = 999 999 999

 Hardy-Ramanujan No.  1729

This is the smallest no. which can be expressed as sum of 2 different cubes in 2 different ways.

Armstrong Number

Armstrong Number

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