135421234 has 16 divisors (see below), whose sum is σ = 220698072. Its totient is φ = 61947648.

The previous prime is 135421229. The next prime is 135421249. The reversal of 135421234 is 432124531.

It can be written as a sum of positive squares in 4 ways, for example, as 49914225 + 85507009 = 7065^2 + 9247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135421199 and 135421208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20109 + ... + 25984.

Almost surely, 2^135421234 is an apocalyptic number.

135421234 is a deficient number, since it is larger than the sum of its proper divisors (85276838).

135421234 is a wasteful number, since it uses less digits than its factorization.

135421234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46221.

The product of its digits is 2880, while the sum is 25.

The square root of 135421234 is about 11637.0629456062. The cubic root of 135421234 is about 513.5257855818.

Adding to 135421234 its reverse (432124531), we get a palindrome (567545765).

The spelling of 135421234 in words is "one hundred thirty-five million, four hundred twenty-one thousand, two hundred thirty-four".