134423020123 has 4 divisors (see below), whose sum is σ = 153626308720. Its totient is φ = 115219731528.

The previous prime is 134423020117. The next prime is 134423020139. The reversal of 134423020123 is 321020324431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321020324431 = 19 ⋅16895806549.

It is a cyclic number.

It is not a de Polignac number, because 134423020123 - 2³³ = 125833085531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134423020423) 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 in 3 ways as a sum of consecutive naturals, for example, 9601644288 + ... + 9601644301.

It is an arithmetic number, because the mean of its divisors is an integer number (38406577180).

Almost surely, 2^134423020123 is an apocalyptic number.

134423020123 is a deficient number, since it is larger than the sum of its proper divisors (19203288597).

134423020123 is an equidigital number, since it uses as much as digits as its factorization.

134423020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19203288596.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 134423020123 its reverse (321020324431), we get a palindrome (455443344554).

The spelling of 134423020123 in words is "one hundred thirty-four billion, four hundred twenty-three million, twenty thousand, one hundred twenty-three".