40423223421121 has 4 divisors (see below), whose sum is σ = 41108362801200. Its totient is φ = 39738084041044.

The previous prime is 40423223421089. The next prime is 40423223421137. The reversal of 40423223421121 is 12112432232404.

40423223421121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40423223421121 - 2⁵ = 40423223421089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40423223422121) 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, 342569689951 + ... + 342569690068.

It is an arithmetic number, because the mean of its divisors is an integer number (10277090700300).

Almost surely, 2^{40423223421121} is an apocalyptic number.

It is an amenable number.

40423223421121 is a deficient number, since it is larger than the sum of its proper divisors (685139380079).

40423223421121 is an equidigital number, since it uses as much as digits as its factorization.

40423223421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685139380078.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 40423223421121 its reverse (12112432232404), we get a palindrome (52535655653525).

The spelling of 40423223421121 in words is "forty trillion, four hundred twenty-three billion, two hundred twenty-three million, four hundred twenty-one thousand, one hundred twenty-one".