143135226 has 72 divisors (see below), whose sum is σ = 338921856. Its totient is φ = 43636320.

The previous prime is 143135221. The next prime is 143135263. The reversal of 143135226 is 622531341.

143135226 is a `hidden beast` number, since 1 + 431 + 3 + 5 + 226 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 143135226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143135221) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 641751 + ... + 641973.

It is an arithmetic number, because the mean of its divisors is an integer number (4707248).

Almost surely, 2^143135226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143135226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169460928).

143135226 is an abundant number, since it is smaller than the sum of its proper divisors (195786630).

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

143135226 is a wasteful number, since it uses less digits than its factorization.

143135226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 452 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 143135226 is about 11963.9134901586. The cubic root of 143135226 is about 523.0969357983.

Adding to 143135226 its reverse (622531341), we get a palindrome (765666567).

The spelling of 143135226 in words is "one hundred forty-three million, one hundred thirty-five thousand, two hundred twenty-six".