135012143 has 4 divisors (see below), whose sum is σ = 154299600. Its totient is φ = 115724688.

The previous prime is 135012133. The next prime is 135012151. The reversal of 135012143 is 341210531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135012143 - 2⁸ = 135011887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135012103) 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, 9643718 + ... + 9643731.

It is an arithmetic number, because the mean of its divisors is an integer number (38574900).

Almost surely, 2^135012143 is an apocalyptic number.

135012143 is a deficient number, since it is larger than the sum of its proper divisors (19287457).

135012143 is an equidigital number, since it uses as much as digits as its factorization.

135012143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19287456.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 135012143 is about 11619.4725783918. The cubic root of 135012143 is about 513.0081644588.

Adding to 135012143 its reverse (341210531), we get a palindrome (476222674).

The spelling of 135012143 in words is "one hundred thirty-five million, twelve thousand, one hundred forty-three".