135047 has 4 divisors (see below), whose sum is σ = 147336. Its totient is φ = 122760.

The previous prime is 135043. The next prime is 135049. The reversal of 135047 is 740531.

It is a happy number.

135047 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.

It is not a de Polignac number, because 135047 - 2² = 135043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135043) 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, 6128 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (36834).

2¹³⁵⁰⁴⁷ is an apocalyptic number.

135047 is a deficient number, since it is larger than the sum of its proper divisors (12289).

135047 is a wasteful number, since it uses less digits than its factorization.

135047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12288.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 135047 is about 367.4874147505. The cubic root of 135047 is about 51.3052309592.

Adding to 135047 its reverse (740531), we get a palindrome (875578).

The spelling of 135047 in words is "one hundred thirty-five thousand, forty-seven".