It is an Ulam number.
It is a plaindrome in base 14.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42080.
42080 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
242080 is an apocalyptic number.
42080 is a gapful number since it is divisible by the number (40) 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 42080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49896).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
42080 is a wasteful number, since it uses less digits than its factorization.
42080 is an odious number, because the sum of its binary digits is odd.
The square root of 42080 is about 205.1341024793. The cubic root of 42080 is about 34.7823224614.
The spelling of 42080 in words is "forty-two thousand, eighty".