134145209 has 8 divisors (see below), whose sum is σ = 146778528. Its totient is φ = 121584960.

The previous prime is 134145197. The next prime is 134145217. The reversal of 134145209 is 902541431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134145209 - 2⁸ = 134144953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134145259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14387 + ... + 21800.

It is an arithmetic number, because the mean of its divisors is an integer number (18347316).

Almost surely, 2^134145209 is an apocalyptic number.

It is an amenable number.

134145209 is a deficient number, since it is larger than the sum of its proper divisors (12633319).

134145209 is a wasteful number, since it uses less digits than its factorization.

134145209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36535.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 134145209 is about 11582.1072780388. The cubic root of 134145209 is about 511.9077707102.

The spelling of 134145209 in words is "one hundred thirty-four million, one hundred forty-five thousand, two hundred nine".