It is a congruent number.
It is an unprimeable number.
2135900 is an apocalyptic number.
135900 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 135900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214396).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
135900 is a wasteful number, since it uses less digits than its factorization.
135900 is an evil number, because the sum of its binary digits is even.
The square root of 135900 is about 368.6461718233. The cubic root of 135900 is about 51.4130244011.
The spelling of 135900 in words is "one hundred thirty-five thousand, nine hundred".