135220134 has 32 divisors (see below), whose sum is σ = 312270336. Its totient is φ = 38234880.

The previous prime is 135220133. The next prime is 135220147. The reversal of 135220134 is 431022531.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 135220134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135220133) 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 15 ways as a sum of consecutive naturals, for example, 12522 + ... + 20669.

It is an arithmetic number, because the mean of its divisors is an integer number (9758448).

Almost surely, 2^135220134 is an apocalyptic number.

135220134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

135220134 is an abundant number, since it is smaller than the sum of its proper divisors (177050202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135220134 is a wasteful number, since it uses less digits than its factorization.

135220134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33300.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 135220134 is about 11628.4192390883. The cubic root of 135220134 is about 513.2714650612.

Adding to 135220134 its reverse (431022531), we get a palindrome (566242665).

The spelling of 135220134 in words is "one hundred thirty-five million, two hundred twenty thousand, one hundred thirty-four".