1002002 has 4 divisors (see below), whose sum is σ = 1503006. Its totient is φ = 501000.

The previous prime is 1001989. The next prime is 1002017. The reversal of 1002002 is 2002001.

It is a Cunningham number, because it is equal to 1001²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 1 = 1001^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250499 + ... + 250502.

2^1002002 is an apocalyptic number.

1002002 is a deficient number, since it is larger than the sum of its proper divisors (501004).

1002002 is an equidigital number, since it uses as much as digits as its factorization.

1002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501003.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 1002002 is about 1001.0004995004. Note that the first 3 decimals coincide. The cubic root of 1002002 is about 100.0666888494.

Adding to 1002002 its reverse (2002001), we get a palindrome (3004003).

Subtracting 1002002 from its reverse (2002001), we obtain a palindrome (999999).

Multiplying 1002002 by its reverse (2002001), we get a palindrome (2006009006002).

The spelling of 1002002 in words is "one million, two thousand, two".