134404423 has 4 divisors (see below), whose sum is σ = 141478360. Its totient is φ = 127330488.

The previous prime is 134404409. The next prime is 134404429. The reversal of 134404423 is 324404431.

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

It is a cyclic number.

It is not a de Polignac number, because 134404423 - 2¹³ = 134396231 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 (134404429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3536940 + ... + 3536977.

It is an arithmetic number, because the mean of its divisors is an integer number (35369590).

Almost surely, 2^134404423 is an apocalyptic number.

134404423 is a deficient number, since it is larger than the sum of its proper divisors (7073937).

134404423 is an equidigital number, since it uses as much as digits as its factorization.

134404423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073936.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 134404423 is about 11593.2921553802. The cubic root of 134404423 is about 512.2372849826.

Adding to 134404423 its reverse (324404431), we get a palindrome (458808854).

The spelling of 134404423 in words is "one hundred thirty-four million, four hundred four thousand, four hundred twenty-three".