1002000104 has 96 divisors (see below), whose sum is σ = 2275479360. Its totient is φ = 404974080.

The previous prime is 1002000101. The next prime is 1002000137. The reversal of 1002000104 is 4010002001.

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 = 1002000091 and 1002000100.

It is not an unprimeable number, because it can be changed into a prime (1002000101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2313872 + ... + 2314304.

It is an arithmetic number, because the mean of its divisors is an integer number (23702910).

Almost surely, 2^1002000104 is an apocalyptic number.

1002000104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002000104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1137739680).

1002000104 is an abundant number, since it is smaller than the sum of its proper divisors (1273479256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002000104 is a wasteful number, since it uses less digits than its factorization.

1002000104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 516 counting only the distinct ones).

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

The square root of 1002000104 is about 31654.3852254312. The cubic root of 1002000104 is about 1000.6662573359. Note that the first 3 decimals are identical.

Adding to 1002000104 its reverse (4010002001), we get a palindrome (5012002105).

The spelling of 1002000104 in words is "one billion, two million, one hundred four", and thus it is an aban number.