It is a happy number.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a congruent number.
2102120 is an apocalyptic number.
102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 102120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
102120 is a wasteful number, since it uses less digits than its factorization.
102120 is an odious number, because the sum of its binary digits is odd.
The square root of 102120 is about 319.5622005181. The cubic root of 102120 is about 46.7416029606.
Adding to 102120 its reverse (21201), we get a palindrome (123321).
The spelling of 102120 in words is "one hundred two thousand, one hundred twenty", and thus it is an iban number.