135420449 has 2 divisors, whose sum is σ = 135420450. Its totient is φ = 135420448.

The previous prime is 135420413. The next prime is 135420469. The reversal of 135420449 is 944024531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118048225 + 17372224 = 10865^2 + 4168^2 .

It is an emirp because it is prime and its reverse (944024531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135420449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135420409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67710224 + 67710225.

It is an arithmetic number, because the mean of its divisors is an integer number (67710225).

Almost surely, 2^135420449 is an apocalyptic number.

It is an amenable number.

135420449 is a deficient number, since it is larger than the sum of its proper divisors (1).

135420449 is an equidigital number, since it uses as much as digits as its factorization.

135420449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 135420449 is about 11637.0292171155. The cubic root of 135420449 is about 513.5247933236.

The spelling of 135420449 in words is "one hundred thirty-five million, four hundred twenty thousand, four hundred forty-nine".