40404204023 has 2 divisors, whose sum is σ = 40404204024. Its totient is φ = 40404204022.

The previous prime is 40404204017. The next prime is 40404204041. The reversal of 40404204023 is 32040240404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40404204023 - 2²⁶ = 40337095159 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40404204023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404204013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202102011 + 20202102012.

It is an arithmetic number, because the mean of its divisors is an integer number (20202102012).

Almost surely, 2^40404204023 is an apocalyptic number.

40404204023 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404204023 is an equidigital number, since it uses as much as digits as its factorization.

40404204023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 40404204023 its reverse (32040240404), we get a palindrome (72444444427).

The spelling of 40404204023 in words is "forty billion, four hundred four million, two hundred four thousand, twenty-three".