134404013 has 4 divisors (see below), whose sum is σ = 134961948. Its totient is φ = 133846080.

The previous prime is 134404007. The next prime is 134404037. The reversal of 134404013 is 310404431.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 81667369 + 52736644 = 9037^2 + 7262^2 .

It is a cyclic number.

It is not a de Polignac number, because 134404013 - 2⁶ = 134403949 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 (134404813) 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, 278606 + ... + 279087.

It is an arithmetic number, because the mean of its divisors is an integer number (33740487).

Almost surely, 2^134404013 is an apocalyptic number.

It is an amenable number.

134404013 is a deficient number, since it is larger than the sum of its proper divisors (557935).

134404013 is an equidigital number, since it uses as much as digits as its factorization.

134404013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557934.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 134404013 is about 11593.2744727277. The cubic root of 134404013 is about 512.2367641230.

Adding to 134404013 its reverse (310404431), we get a palindrome (444808444).

The spelling of 134404013 in words is "one hundred thirty-four million, four hundred four thousand, thirteen".