135249427 has 4 divisors (see below), whose sum is σ = 135612400. Its totient is φ = 134886456.

The previous prime is 135249421. The next prime is 135249431. The reversal of 135249427 is 724942531.

135249427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724942531 = 103 ⋅7038277.

It is a cyclic number.

It is not a de Polignac number, because 135249427 - 2³ = 135249419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135249421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180927 + ... + 181672.

It is an arithmetic number, because the mean of its divisors is an integer number (33903100).

Almost surely, 2^135249427 is an apocalyptic number.

135249427 is a deficient number, since it is larger than the sum of its proper divisors (362973).

135249427 is an equidigital number, since it uses as much as digits as its factorization.

135249427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362972.

The product of its digits is 60480, while the sum is 37.

The square root of 135249427 is about 11629.6787143928. The cubic root of 135249427 is about 513.3085260496.

The spelling of 135249427 in words is "one hundred thirty-five million, two hundred forty-nine thousand, four hundred twenty-seven".