134507509 has 2 divisors, whose sum is σ = 134507510. Its totient is φ = 134507508.

The previous prime is 134507489. The next prime is 134507521. The reversal of 134507509 is 905705431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128890609 + 5616900 = 11353^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 134507509 - 2¹⁵ = 134474741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134507209) 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 as a sum of consecutive naturals, namely, 67253754 + 67253755.

It is an arithmetic number, because the mean of its divisors is an integer number (67253755).

Almost surely, 2^134507509 is an apocalyptic number.

It is an amenable number.

134507509 is a deficient number, since it is larger than the sum of its proper divisors (1).

134507509 is an equidigital number, since it uses as much as digits as its factorization.

134507509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 134507509 is about 11597.7372362026. The cubic root of 134507509 is about 512.3682107296.

The spelling of 134507509 in words is "one hundred thirty-four million, five hundred seven thousand, five hundred nine".