1000104021 has 24 divisors (see below), whose sum is σ = 1691237184. Its totient is φ = 557547840.

The previous prime is 1000103987. The next prime is 1000104041. The reversal of 1000104021 is 1204010001.

It is a happy number.

1000104021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000104021 - 2⁶ = 1000103957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1000103994 and 1000104012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000104041) 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, 191011 + ... + 196176.

It is an arithmetic number, because the mean of its divisors is an integer number (70468216).

Almost surely, 2^1000104021 is an apocalyptic number.

It is an amenable number.

1000104021 is a deficient number, since it is larger than the sum of its proper divisors (691133163).

1000104021 is a wasteful number, since it uses less digits than its factorization.

1000104021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387241 (or 387238 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1000104021 is about 31624.4212753372. The cubic root of 1000104021 is about 1000.0346724645.

Adding to 1000104021 its reverse (1204010001), we get a palindrome (2204114022).

The spelling of 1000104021 in words is "one billion, one hundred four thousand, twenty-one".