It is a sphenic number, since it is the product of 3 distinct primes.
1000002 is an admirable number.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is an Ulam number.
21000002 is an apocalyptic number.
1000002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1000002 is a wasteful number, since it uses less digits than its factorization.
1000002 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 166672.
The square root of 1000002 is about 1000.0009999995. Note that the first 3 decimals coincide. The cubic root of 1000002 is about 100.0000666666. Note that the first 4 decimals are identical.