134775509 has 4 divisors (see below), whose sum is σ = 147027840. Its totient is φ = 122523180.

The previous prime is 134775491. The next prime is 134775517. The reversal of 134775509 is 905577431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134775509 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 (134775539) 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, 6126149 + ... + 6126170.

It is an arithmetic number, because the mean of its divisors is an integer number (36756960).

Almost surely, 2^134775509 is an apocalyptic number.

It is an amenable number.

134775509 is a deficient number, since it is larger than the sum of its proper divisors (12252331).

134775509 is a wasteful number, since it uses less digits than its factorization.

134775509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12252330.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 134775509 is about 11609.2854646615. The cubic root of 134775509 is about 512.7082749748.

The spelling of 134775509 in words is "one hundred thirty-four million, seven hundred seventy-five thousand, five hundred nine".