It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is an unprimeable number.
2100115 is an apocalyptic number.
100115 is an equidigital number, since it uses as much as digits as its factorization.
100115 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20028.
The square root of 100115 is about 316.4095447359. The cubic root of 100115 is about 46.4336742771.
Adding to 100115 its reverse (511001), we get a palindrome (611116).
The spelling of 100115 in words is "one hundred thousand, one hundred fifteen".