135144473 has 8 divisors (see below), whose sum is σ = 142660800. Its totient is φ = 127668528.

The previous prime is 135144439. The next prime is 135144491. The reversal of 135144473 is 374441531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135144473 - 2¹⁴ = 135128089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135144433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3086 + ... + 16727.

It is an arithmetic number, because the mean of its divisors is an integer number (17832600).

Almost surely, 2^135144473 is an apocalyptic number.

It is an amenable number.

135144473 is a deficient number, since it is larger than the sum of its proper divisors (7516327).

135144473 is a wasteful number, since it uses less digits than its factorization.

135144473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20191.

The product of its digits is 20160, while the sum is 32.

The square root of 135144473 is about 11625.1655041982. The cubic root of 135144473 is about 513.1757153218.

The spelling of 135144473 in words is "one hundred thirty-five million, one hundred forty-four thousand, four hundred seventy-three".