1002104 has 16 divisors (see below), whose sum is σ = 1890600. Its totient is φ = 497952.

The previous prime is 1002101. The next prime is 1002109. The reversal of 1002104 is 4012001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 1002091 and 1002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559 + ... + 2105.

2^1002104 is an apocalyptic number.

It is an amenable number.

1002104 is a deficient number, since it is larger than the sum of its proper divisors (888496).

1002104 is a wasteful number, since it uses less digits than its factorization.

1002104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1002104 is about 1001.0514472294. The cubic root of 1002104 is about 100.0700842039.

Adding to 1002104 its reverse (4012001), we get a palindrome (5014105).

The spelling of 1002104 in words is "one million, two thousand, one hundred four".