40403423121 has 8 divisors (see below), whose sum is σ = 54347967840. Its totient is φ = 26697246912.

The previous prime is 40403423119. The next prime is 40403423141. The reversal of 40403423121 is 12132430404.

40403423121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40403423121 - 2¹ = 40403423119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40403423091 and 40403423100.

It is not an unprimeable number, because it can be changed into a prime (40403423141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59591731 + ... + 59592408.

It is an arithmetic number, because the mean of its divisors is an integer number (6793495980).

Almost surely, 2^40403423121 is an apocalyptic number.

It is an amenable number.

40403423121 is a deficient number, since it is larger than the sum of its proper divisors (13944544719).

40403423121 is a wasteful number, since it uses less digits than its factorization.

40403423121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119184255.

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

Adding to 40403423121 its reverse (12132430404), we get a palindrome (52535853525).

The spelling of 40403423121 in words is "forty billion, four hundred three million, four hundred twenty-three thousand, one hundred twenty-one".