11400120423 has 24 divisors (see below), whose sum is σ = 17447597856. Its totient is φ = 7148044800.

The previous prime is 11400120377. The next prime is 11400120427. The reversal of 11400120423 is 32402100411.

It is not a de Polignac number, because 11400120423 - 2⁹ = 11400119911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11400120396 and 11400120405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400120427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201438 + ... + 251748.

It is an arithmetic number, because the mean of its divisors is an integer number (726983244).

Almost surely, 2^11400120423 is an apocalyptic number.

11400120423 is a deficient number, since it is larger than the sum of its proper divisors (6047477433).

11400120423 is a wasteful number, since it uses less digits than its factorization.

11400120423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51815 (or 51812 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11400120423 its reverse (32402100411), we get a palindrome (43802220834).

The spelling of 11400120423 in words is "eleven billion, four hundred million, one hundred twenty thousand, four hundred twenty-three".