100128417 has 4 divisors (see below), whose sum is σ = 133504560. Its totient is φ = 66752276.

The previous prime is 100128397. The next prime is 100128439. The reversal of 100128417 is 714821001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100128417 - 2¹⁰ = 100127393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100128617) 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, 16688067 + ... + 16688072.

It is an arithmetic number, because the mean of its divisors is an integer number (33376140).

Almost surely, 2^100128417 is an apocalyptic number.

It is an amenable number.

100128417 is a deficient number, since it is larger than the sum of its proper divisors (33376143).

100128417 is an equidigital number, since it uses as much as digits as its factorization.

100128417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33376142.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 100128417 is about 10006.4187899568. The cubic root of 100128417 is about 464.3574846773.

Adding to 100128417 its reverse (714821001), we get a palindrome (814949418).

The spelling of 100128417 in words is "one hundred million, one hundred twenty-eight thousand, four hundred seventeen".