135120149 has 2 divisors, whose sum is σ = 135120150. Its totient is φ = 135120148.

The previous prime is 135120143. The next prime is 135120151. The reversal of 135120149 is 941021531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134397649 + 722500 = 11593^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135120149 is a prime.

Together with 135120151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135120143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67560074 + 67560075.

It is an arithmetic number, because the mean of its divisors is an integer number (67560075).

Almost surely, 2^135120149 is an apocalyptic number.

It is an amenable number.

135120149 is a deficient number, since it is larger than the sum of its proper divisors (1).

135120149 is an equidigital number, since it uses as much as digits as its factorization.

135120149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 135120149 is about 11624.1192784658. The cubic root of 135120149 is about 513.1449254696.

The spelling of 135120149 in words is "one hundred thirty-five million, one hundred twenty thousand, one hundred forty-nine".