By the multiples of 123 (which are infinite), including these: 123, 246, 369, 492, 615, 738, 861, 984, 1107 . . .
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123 is not a prime number because it is divisible by 41 and 3. (123/41=3 and 123/3=41)A prime number is any number that is only divisible by two factors, one and itself.123 is a composite number because its factors are 1, 3, 41, and 123.
234
To find a number between 120 and 130 that is divisible by 3 and has a digit sum divisible by 4, we first consider the numbers in that range: 121, 122, 123, 124, 125, 126, 127, 128, 129. Next, we calculate the digit sum of each number: 121 (1+2+1=4), 122 (1+2+2=5), 123 (1+2+3=6), 124 (1+2+4=7), 125 (1+2+5=8), 126 (1+2+6=9), 127 (1+2+7=10), 128 (1+2+8=11), 129 (1+2+9=12). Therefore, the number between 120 and 130 that is divisible by 3 and has a digit sum divisible by 4 is 123.
123 is not a Fibonacci number.
If the last three digits of a number are divisible by 8, the whole number is divisible by 8.