42134443123 has 2 divisors, whose sum is σ = 42134443124. Its totient is φ = 42134443122.

The previous prime is 42134443081. The next prime is 42134443133. The reversal of 42134443123 is 32134443124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42134443123 is a prime.

It is a super-2 number, since 2×42134443123² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42134443133) 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, 21067221561 + 21067221562.

It is an arithmetic number, because the mean of its divisors is an integer number (21067221562).

Almost surely, 2^42134443123 is an apocalyptic number.

42134443123 is a deficient number, since it is larger than the sum of its proper divisors (1).

42134443123 is an equidigital number, since it uses as much as digits as its factorization.

42134443123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 31.

Adding to 42134443123 its reverse (32134443124), we get a palindrome (74268886247).

Subtracting from 42134443123 its reverse (32134443124), we obtain a palindrome (9999999999).

The spelling of 42134443123 in words is "forty-two billion, one hundred thirty-four million, four hundred forty-three thousand, one hundred twenty-three".