It is a d-powerful number, because it can be written as 37 + 45 + 93 + 2 .
It is a plaindrome in base 12 and base 15.
It is a nialpdrome in base 16.
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 3942.
3942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
23942 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3942 is a wasteful number, since it uses less digits than its factorization.
3942 is an evil number, because the sum of its binary digits is even.
The square root of 3942 is about 62.7853486094. The cubic root of 3942 is about 15.7969122845.
The spelling of 3942 in words is "three thousand, nine hundred forty-two".