40423121223 has 32 divisors (see below), whose sum is σ = 55997706240. Its totient is φ = 25922361600.

The previous prime is 40423121213. The next prime is 40423121227. The reversal of 40423121223 is 32212132404.

It is a happy number.

It is not a de Polignac number, because 40423121223 - 2⁵ = 40423121191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40423121193 and 40423121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423121227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1940658 + ... + 1961376.

It is an arithmetic number, because the mean of its divisors is an integer number (1749928320).

Almost surely, 2^40423121223 is an apocalyptic number.

40423121223 is a deficient number, since it is larger than the sum of its proper divisors (15574585017).

40423121223 is a wasteful number, since it uses less digits than its factorization.

40423121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21007.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40423121223 its reverse (32212132404), we get a palindrome (72635253627).

The spelling of 40423121223 in words is "forty billion, four hundred twenty-three million, one hundred twenty-one thousand, two hundred twenty-three".