10121043423 has 4 divisors (see below), whose sum is σ = 13494724568. Its totient is φ = 6747362280.

The previous prime is 10121043419. The next prime is 10121043473. The reversal of 10121043423 is 32434012101.

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

It is not a de Polignac number, because 10121043423 - 2² = 10121043419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10121043423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121043473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1686840568 + ... + 1686840573.

It is an arithmetic number, because the mean of its divisors is an integer number (3373681142).

Almost surely, 2^10121043423 is an apocalyptic number.

10121043423 is a deficient number, since it is larger than the sum of its proper divisors (3373681145).

10121043423 is an equidigital number, since it uses as much as digits as its factorization.

10121043423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373681144.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 10121043423 its reverse (32434012101), we get a palindrome (42555055524).

The spelling of 10121043423 in words is "ten billion, one hundred twenty-one million, forty-three thousand, four hundred twenty-three".