143243442 has 24 divisors (see below), whose sum is σ = 311976444. Its totient is φ = 47499264.

The previous prime is 143243389. The next prime is 143243459. The reversal of 143243442 is 244342341.

It is a happy number.

143243442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 138086001 + 5157441 = 11751^2 + 2271^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17143 + ... + 24090.

Almost surely, 2^143243442 is an apocalyptic number.

143243442 is an abundant number, since it is smaller than the sum of its proper divisors (168733002).

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

143243442 is a wasteful number, since it uses less digits than its factorization.

143243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41434 (or 41431 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 143243442 is about 11968.4352360699. The cubic root of 143243442 is about 523.2287300457.

Adding to 143243442 its reverse (244342341), we get a palindrome (387585783).

It can be divided in two parts, 14324 and 3442, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 143243442 in words is "one hundred forty-three million, two hundred forty-three thousand, four hundred forty-two".