135123134 has 16 divisors (see below), whose sum is σ = 205807056. Its totient is φ = 66528000.

The previous prime is 135123133. The next prime is 135123139. The reversal of 135123134 is 431321531.

It is a super-2 number, since 2×135123134² = 36516522683963912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135123133) 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 7 ways as a sum of consecutive naturals, for example, 39284 + ... + 42584.

It is an arithmetic number, because the mean of its divisors is an integer number (12862941).

Almost surely, 2^135123134 is an apocalyptic number.

135123134 is a deficient number, since it is larger than the sum of its proper divisors (70683922).

135123134 is a wasteful number, since it uses less digits than its factorization.

135123134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611.

The product of its digits is 1080, while the sum is 23.

The square root of 135123134 is about 11624.2476745809. The cubic root of 135123134 is about 513.1487041469.

Adding to 135123134 its reverse (431321531), we get a palindrome (566444665).

The spelling of 135123134 in words is "one hundred thirty-five million, one hundred twenty-three thousand, one hundred thirty-four".