134404123 has 4 divisors (see below), whose sum is σ = 153604720. Its totient is φ = 115203528.

The previous prime is 134404069. The next prime is 134404129. The reversal of 134404123 is 321404431.

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-134404123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134404094 and 134404103.

It is not an unprimeable number, because it can be changed into a prime (134404129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9600288 + ... + 9600301.

It is an arithmetic number, because the mean of its divisors is an integer number (38401180).

Almost surely, 2^134404123 is an apocalyptic number.

134404123 is a deficient number, since it is larger than the sum of its proper divisors (19200597).

134404123 is an equidigital number, since it uses as much as digits as its factorization.

134404123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19200596.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 134404123 is about 11593.2792168566. The cubic root of 134404123 is about 512.2369038659.

Adding to 134404123 its reverse (321404431), we get a palindrome (455808554).

The spelling of 134404123 in words is "one hundred thirty-four million, four hundred four thousand, one hundred twenty-three".