40002104123 has 2 divisors, whose sum is σ = 40002104124. Its totient is φ = 40002104122.

The previous prime is 40002104111. The next prime is 40002104161. The reversal of 40002104123 is 32140120004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40002104123 - 2³² = 35707136827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40002104173) 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 as a sum of consecutive naturals, namely, 20001052061 + 20001052062.

It is an arithmetic number, because the mean of its divisors is an integer number (20001052062).

Almost surely, 2^40002104123 is an apocalyptic number.

40002104123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40002104123 is an equidigital number, since it uses as much as digits as its factorization.

40002104123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 40002104123 its reverse (32140120004), we get a palindrome (72142224127).

The spelling of 40002104123 in words is "forty billion, two million, one hundred four thousand, one hundred twenty-three".