42243122134223 has 4 divisors (see below), whose sum is σ = 42250555383288. Its totient is φ = 42235688885160.

The previous prime is 42243122134201. The next prime is 42243122134307. The reversal of 42243122134223 is 32243122134224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42243122134223 is a prime.

It is a super-2 number, since 2×42243122134223² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243122134523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3716616008 + ... + 3716627373.

It is an arithmetic number, because the mean of its divisors is an integer number (10562638845822).

Almost surely, 2^{42243122134223} is an apocalyptic number.

42243122134223 is a deficient number, since it is larger than the sum of its proper divisors (7433249065).

42243122134223 is an equidigital number, since it uses as much as digits as its factorization.

42243122134223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433249064.

The product of its digits is 110592, while the sum is 35.

Adding to 42243122134223 its reverse (32243122134224), we get a palindrome (74486244268447).

Subtracting from 42243122134223 its reverse (32243122134224), we obtain a palindrome (9999999999999).

The spelling of 42243122134223 in words is "forty-two trillion, two hundred forty-three billion, one hundred twenty-two million, one hundred thirty-four thousand, two hundred twenty-three".