# Is 42 a Harshad number?

Harshad numbers in base 10 form the sequence: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 18, 20, 21, 24, 27, 30, 36, 40, 42, 45, 48, 50, 54, 60, 63, 70, 72, 80, 81, 84, 90, 100, 102, 108, 110, 111, 112, 114, 117, 120, 126, 132, 133, 135, 140, 144, 150, 152, 153, 156, 162, 171, 180, 190, 192, 195, 198, 200,Click to see full answer. Also to know is, is 198 a Harshad number?The single digits, 1 through 9, are trivially Harshad numbers, and so is 10, 12, 133, 152 and 198 are Harshad numbers. Take 133:1+3+3=7, and 133/7=19. Or 198:1+9+8=18, and 198/18=11. Number theorists have taken Harshad numbers and run off in all kinds of directions.Also Know, how can I find my Harshad number? If a number is divisible by the sum of its digits then it will be known as a Harshad Number. For example: The number 156 is divisible by the sum (12) of its digits (1, 5, 6 ). Some Harshad numbers are 8, 54, 120 etc. Herein, is 2020 a Harshad number? It is a Harshad number since it is a multiple of its sum of digits (4). It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits. 2020 is an undulating number in base 10.What is a multiple Harshad number?A Multiple Harshad number is an integer which when divided by the sum of its digits, produces another Harshad number. For example, consider the number 6804. 6 + 8 + 0 + 4 = 18. A Harshad number is an integer which is divisible by the sum of its digits. It is also known as a Niven number.