78421

78421 is a five-digit number that falls within the range of 78000 to 78999. It is an odd number, as it ends in the digit 1, and it is divisible by 3, as the sum of its digits (7 + 8 + 4 + 2 + 1) equals 22, which is a multiple of 3. In the decimal system, 78421 is written as "seventy-eight thousand, four hundred twenty-one." In binary, it is represented as 100110010001011, and in hexadecimal, it is written as 1310B. The number 78421 is also known as a Harshad number, or Niven number, because it is divisible by the sum of its digits. Additionally, 78421 is a palindromic number in the base 11 system, as it reads the same forwards and backwards when expressed in that base.