134512423 has 4 divisors (see below), whose sum is σ = 134563248. Its totient is φ = 134461600.

The previous prime is 134512409. The next prime is 134512481. The reversal of 134512423 is 324215431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324215431 = 2011 ⋅161221.

It is a cyclic number.

It is not a de Polignac number, because 134512423 - 2²⁵ = 100957991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134512493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21211 + ... + 26812.

It is an arithmetic number, because the mean of its divisors is an integer number (33640812).

Almost surely, 2^134512423 is an apocalyptic number.

134512423 is a deficient number, since it is larger than the sum of its proper divisors (50825).

134512423 is an equidigital number, since it uses as much as digits as its factorization.

134512423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50824.

The product of its digits is 2880, while the sum is 25.

The square root of 134512423 is about 11597.9490859376. The cubic root of 134512423 is about 512.3744501501.

Adding to 134512423 its reverse (324215431), we get a palindrome (458727854).

The spelling of 134512423 in words is "one hundred thirty-four million, five hundred twelve thousand, four hundred twenty-three".