42123322334123 has 2 divisors, whose sum is σ = 42123322334124. Its totient is φ = 42123322334122.

The previous prime is 42123322334099. The next prime is 42123322334173. The reversal of 42123322334123 is 32143322332124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42123322334123 - 2²⁰ = 42123321285547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42123322334173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061661167061 + 21061661167062.

It is an arithmetic number, because the mean of its divisors is an integer number (21061661167062).

Almost surely, 2^{42123322334123} is an apocalyptic number.

42123322334123 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123322334123 is an equidigital number, since it uses as much as digits as its factorization.

42123322334123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 35.

Adding to 42123322334123 its reverse (32143322332124), we get a palindrome (74266644666247).

The spelling of 42123322334123 in words is "forty-two trillion, one hundred twenty-three billion, three hundred twenty-two million, three hundred thirty-four thousand, one hundred twenty-three".