135426 has 8 divisors (see below), whose sum is σ = 270864. Its totient is φ = 45140.

The previous prime is 135409. The next prime is 135427. The reversal of 135426 is 624531.

It is a happy number.

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

135426 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (135427) by changing a digit.

135426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11280 + ... + 11291.

It is an arithmetic number, because the mean of its divisors is an integer number (33858).

2¹³⁵⁴²⁶ is an apocalyptic number.

135426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

135426 is a wasteful number, since it uses less digits than its factorization.

135426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22576.

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

The square root of 135426 is about 368.0027173813. The cubic root of 135426 is about 51.3531809834.

Adding to 135426 its reverse (624531), we get a palindrome (759957).

It can be divided in two parts, 135 and 426, that added together give a triangular number (561 = T₃₃).

The spelling of 135426 in words is "one hundred thirty-five thousand, four hundred twenty-six".