135240293 has 2 divisors, whose sum is σ = 135240294. Its totient is φ = 135240292.

The previous prime is 135240277. The next prime is 135240317. The reversal of 135240293 is 392042531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133795489 + 1444804 = 11567^2 + 1202^2 .

It is an emirp because it is prime and its reverse (392042531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135240293 - 2⁴ = 135240277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135240493) 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, 67620146 + 67620147.

It is an arithmetic number, because the mean of its divisors is an integer number (67620147).

Almost surely, 2^135240293 is an apocalyptic number.

It is an amenable number.

135240293 is a deficient number, since it is larger than the sum of its proper divisors (1).

135240293 is an equidigital number, since it uses as much as digits as its factorization.

135240293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 135240293 is about 11629.2860055981. The cubic root of 135240293 is about 513.2969704476.

The spelling of 135240293 in words is "one hundred thirty-five million, two hundred forty thousand, two hundred ninety-three".