100004123 has 4 divisors (see below), whose sum is σ = 100345728. Its totient is φ = 99662520.

The previous prime is 100004119. The next prime is 100004137. The reversal of 100004123 is 321400001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321400001 = 13 ⋅24723077.

It is a cyclic number.

It is not a de Polignac number, because 100004123 - 2² = 100004119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100004143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170363 + ... + 170948.

It is an arithmetic number, because the mean of its divisors is an integer number (25086432).

Almost surely, 2^100004123 is an apocalyptic number.

100004123 is a deficient number, since it is larger than the sum of its proper divisors (341605).

100004123 is an equidigital number, since it uses as much as digits as its factorization.

100004123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341604.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 100004123 is about 10000.2061478752. The cubic root of 100004123 is about 464.1652623639.

Adding to 100004123 its reverse (321400001), we get a palindrome (421404124).

The spelling of 100004123 in words is "one hundred million, four thousand, one hundred twenty-three".