134073209 has 2 divisors, whose sum is σ = 134073210. Its totient is φ = 134073208.

The previous prime is 134073179. The next prime is 134073211. The reversal of 134073209 is 902370431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69222400 + 64850809 = 8320^2 + 8053^2 .

It is a cyclic number.

It is not a de Polignac number, because 134073209 - 2¹² = 134069113 is a prime.

Together with 134073211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134073229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67036604 + 67036605.

It is an arithmetic number, because the mean of its divisors is an integer number (67036605).

Almost surely, 2^134073209 is an apocalyptic number.

It is an amenable number.

134073209 is a deficient number, since it is larger than the sum of its proper divisors (1).

134073209 is an equidigital number, since it uses as much as digits as its factorization.

134073209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 134073209 is about 11578.9986181880. The cubic root of 134073209 is about 511.8161685926.

The spelling of 134073209 in words is "one hundred thirty-four million, seventy-three thousand, two hundred nine".