40123240223 has 4 divisors (see below), whose sum is σ = 43770807528. Its totient is φ = 36475672920.

The previous prime is 40123240219. The next prime is 40123240229. The reversal of 40123240223 is 32204232104.

40123240223 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.

It is a cyclic number.

It is not a de Polignac number, because 40123240223 - 2² = 40123240219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123240229) 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, 1823783636 + ... + 1823783657.

It is an arithmetic number, because the mean of its divisors is an integer number (10942701882).

Almost surely, 2^40123240223 is an apocalyptic number.

40123240223 is a deficient number, since it is larger than the sum of its proper divisors (3647567305).

40123240223 is a wasteful number, since it uses less digits than its factorization.

40123240223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647567304.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40123240223 its reverse (32204232104), we get a palindrome (72327472327).

The spelling of 40123240223 in words is "forty billion, one hundred twenty-three million, two hundred forty thousand, two hundred twenty-three".