100123434443 has 4 divisors (see below), whose sum is σ = 100127252400. Its totient is φ = 100119616488.

The previous prime is 100123434431. The next prime is 100123434457. The reversal of 100123434443 is 344434321001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100123434443 - 2²⁸ = 99854998987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100123434403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869368 + ... + 1922181.

It is an arithmetic number, because the mean of its divisors is an integer number (25031813100).

Almost surely, 2^100123434443 is an apocalyptic number.

100123434443 is a deficient number, since it is larger than the sum of its proper divisors (3817957).

100123434443 is an equidigital number, since it uses as much as digits as its factorization.

100123434443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817956.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 100123434443 its reverse (344434321001), we get a palindrome (444557755444).

The spelling of 100123434443 in words is "one hundred billion, one hundred twenty-three million, four hundred thirty-four thousand, four hundred forty-three".