1001000002 has 8 divisors (see below), whose sum is σ = 1502985276. Its totient is φ = 500004912.

The previous prime is 1000999949. The next prime is 1001000027. The reversal of 1001000002 is 2000001001.

It can be written as a sum of positive squares in 2 ways, for example, as 994077841 + 6922161 = 31529^2 + 2631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1000999955 and 1001000000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245013 + ... + 249064.

Almost surely, 2^1001000002 is an apocalyptic number.

1001000002 is a deficient number, since it is larger than the sum of its proper divisors (501985274).

1001000002 is a wasteful number, since it uses less digits than its factorization.

1001000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495092.

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 1001000002 is about 31638.5840707197. The cubic root of 1001000002 is about 1000.3332229501. Note that the first 3 decimals are identical.

Adding to 1001000002 its reverse (2000001001), we get a palindrome (3001001003).

Subtracting 1001000002 from its reverse (2000001001), we obtain a palindrome (999000999).

The spelling of 1001000002 in words is "one billion, one million, two", and thus it is an aban number and an uban number.