143232442 has 4 divisors (see below), whose sum is σ = 214848666. Its totient is φ = 71616220.

The previous prime is 143232413. The next prime is 143232457. The reversal of 143232442 is 244232341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88190881 + 55041561 = 9391^2 + 7419^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 35808109 + ... + 35808112.

Almost surely, 2^143232442 is an apocalyptic number.

143232442 is a deficient number, since it is larger than the sum of its proper divisors (71616224).

143232442 is an equidigital number, since it uses as much as digits as its factorization.

143232442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71616223.

The product of its digits is 4608, while the sum is 25.

The square root of 143232442 is about 11967.9756851357. The cubic root of 143232442 is about 523.2153363822.

Adding to 143232442 its reverse (244232341), we get a palindrome (387464783).

The spelling of 143232442 in words is "one hundred forty-three million, two hundred thirty-two thousand, four hundred forty-two".