134242309 has 2 divisors, whose sum is σ = 134242310. Its totient is φ = 134242308.

The previous prime is 134242279. The next prime is 134242313. The reversal of 134242309 is 903242431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127193284 + 7049025 = 11278^2 + 2655^2 .

It is a cyclic number.

It is not a de Polignac number, because 134242309 - 2⁷ = 134242181 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134242609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67121154 + 67121155.

It is an arithmetic number, because the mean of its divisors is an integer number (67121155).

Almost surely, 2^134242309 is an apocalyptic number.

It is an amenable number.

134242309 is a deficient number, since it is larger than the sum of its proper divisors (1).

134242309 is an equidigital number, since it uses as much as digits as its factorization.

134242309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 134242309 is about 11586.2983303556. The cubic root of 134242309 is about 512.0312544499.

The spelling of 134242309 in words is "one hundred thirty-four million, two hundred forty-two thousand, three hundred nine".