135056873 has 4 divisors (see below), whose sum is σ = 154350720. Its totient is φ = 115763028.

The previous prime is 135056869. The next prime is 135056881. The reversal of 135056873 is 378650531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 378650531 = 7 ⋅54092933.

It is a cyclic number.

It is not a de Polignac number, because 135056873 - 2² = 135056869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135056813) 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 in 3 ways as a sum of consecutive naturals, for example, 9646913 + ... + 9646926.

It is an arithmetic number, because the mean of its divisors is an integer number (38587680).

Almost surely, 2^135056873 is an apocalyptic number.

It is an amenable number.

135056873 is a deficient number, since it is larger than the sum of its proper divisors (19293847).

135056873 is an equidigital number, since it uses as much as digits as its factorization.

135056873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19293846.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 135056873 is about 11621.3972051557. The cubic root of 135056873 is about 513.0648120093.

The spelling of 135056873 in words is "one hundred thirty-five million, fifty-six thousand, eight hundred seventy-three".