135144256 has 56 divisors (see below), whose sum is σ = 291307520. Its totient is φ = 61834752.

The previous prime is 135144253. The next prime is 135144257. The reversal of 135144256 is 652441531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135144253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105025 + ... + 106303.

It is an arithmetic number, because the mean of its divisors is an integer number (5201920).

Almost surely, 2^135144256 is an apocalyptic number.

135144256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135144256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145653760).

135144256 is an abundant number, since it is smaller than the sum of its proper divisors (156163264).

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

135144256 is a wasteful number, since it uses less digits than its factorization.

135144256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1421 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 135144256 is about 11625.1561709940. The cubic root of 135144256 is about 513.1754406548.

Adding to 135144256 its reverse (652441531), we get a palindrome (787585787).

The spelling of 135144256 in words is "one hundred thirty-five million, one hundred forty-four thousand, two hundred fifty-six".