102345

102345 is a natural number and the six-digit integer that sits between 102344 and 102346. It carries several notable arithmetic properties that can be illustrated without context beyond number theory.

In mathematics, 102345 factors as 3 × 5 × 6823, where 6823 is a prime number. The sum of its digits is 1+0+2+3+4+5 = 15, which shows the number is divisible by 3 and by 5. As a result, 102345 is a Harshad (Niven) number in base 10, since it is divisible by the sum of its digits. Its digital root is 6 (the repeated sum of digits until a single digit remains).

A distinctive digit property is that 102345 uses each digit from 0 through 5 exactly once. In other words, it is a permutation of the set {0,1,2,3,4,5}. Among all six-digit numbers containing each of these digits exactly once, 102345 is the smallest, with the remaining digits arranged in ascending order after the leading 1.

Representations in other bases include hexadecimal and binary. In hexadecimal, 102345 equals 0x18FC9. In binary, it is 11000111111001001.

Because it is a specific numerical value rather than a widely recognized constant, 102345 commonly appears as an example or identifier in numerical datasets, programming exercises, or numerical demonstrations. It has no widely cited historical or scientific significance beyond its mathematical and representational properties.