100444123 has 16 divisors (see below), whose sum is σ = 114057216. Its totient is φ = 87801120.

The previous prime is 100444103. The next prime is 100444133. The reversal of 100444123 is 321444001.

It is a cyclic number.

It is not a de Polignac number, because 100444123 - 2⁹ = 100443611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100444123.

It is not an unprimeable number, because it can be changed into a prime (100444103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16290 + ... + 21592.

It is an arithmetic number, because the mean of its divisors is an integer number (7128576).

Almost surely, 2^100444123 is an apocalyptic number.

100444123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100444123 is a deficient number, since it is larger than the sum of its proper divisors (13613093).

100444123 is a wasteful number, since it uses less digits than its factorization.

100444123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5394.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 100444123 is about 10022.1815489443. The cubic root of 100444123 is about 464.8450140593.

Adding to 100444123 its reverse (321444001), we get a palindrome (421888124).

The spelling of 100444123 in words is "one hundred million, four hundred forty-four thousand, one hundred twenty-three".