100004121 has 24 divisors (see below), whose sum is σ = 166612160. Its totient is φ = 56617056.

The previous prime is 100004119. The next prime is 100004137. The reversal of 100004121 is 121400001.

It is a happy number.

It is not a de Polignac number, because 100004121 - 2¹ = 100004119 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100004141) 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, 415 + ... + 14148.

Almost surely, 2^100004121 is an apocalyptic number.

It is an amenable number.

100004121 is a deficient number, since it is larger than the sum of its proper divisors (66608039).

100004121 is a wasteful number, since it uses less digits than its factorization.

100004121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14685 (or 14682 counting only the distinct ones).

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

The square root of 100004121 is about 10000.2060478772. The cubic root of 100004121 is about 464.1652592696.

Adding to 100004121 its reverse (121400001), we get a palindrome (221404122).

The spelling of 100004121 in words is "one hundred million, four thousand, one hundred twenty-one".