11421242423 has 4 divisors (see below), whose sum is σ = 11424183120. Its totient is φ = 11418301728.

The previous prime is 11421242389. The next prime is 11421242477. The reversal of 11421242423 is 32424212411.

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 11421242423 - 2⁶ = 11421242359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11421242392 and 11421242401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421242123) 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, 1464515 + ... + 1472292.

It is an arithmetic number, because the mean of its divisors is an integer number (2856045780).

Almost surely, 2^11421242423 is an apocalyptic number.

11421242423 is a deficient number, since it is larger than the sum of its proper divisors (2940697).

11421242423 is an equidigital number, since it uses as much as digits as its factorization.

11421242423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940696.

The product of its digits is 3072, while the sum is 26.

Adding to 11421242423 its reverse (32424212411), we get a palindrome (43845454834).

The spelling of 11421242423 in words is "eleven billion, four hundred twenty-one million, two hundred forty-two thousand, four hundred twenty-three".