135219423 has 16 divisors (see below), whose sum is σ = 189112320. Its totient is φ = 85840416.

The previous prime is 135219419. The next prime is 135219439. The reversal of 135219423 is 324912531.

135219423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135219423 - 2² = 135219419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135219223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7743 + ... + 18176.

It is an arithmetic number, because the mean of its divisors is an integer number (11819520).

Almost surely, 2^135219423 is an apocalyptic number.

135219423 is a deficient number, since it is larger than the sum of its proper divisors (53892897).

135219423 is a wasteful number, since it uses less digits than its factorization.

135219423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26006.

The product of its digits is 6480, while the sum is 30.

The square root of 135219423 is about 11628.3886673950. The cubic root of 135219423 is about 513.2705654499.

The spelling of 135219423 in words is "one hundred thirty-five million, two hundred nineteen thousand, four hundred twenty-three".