143302442 has 4 divisors (see below), whose sum is σ = 214953666. Its totient is φ = 71651220.

The previous prime is 143302441. The next prime is 143302447. The reversal of 143302442 is 244203341.

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., 132733441 + 10569001 = 11521^2 + 3251^2 .

It is not an unprimeable number, because it can be changed into a prime (143302441) by changing a digit.

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, 35825609 + ... + 35825612.

Almost surely, 2^143302442 is an apocalyptic number.

143302442 is a deficient number, since it is larger than the sum of its proper divisors (71651224).

143302442 is an equidigital number, since it uses as much as digits as its factorization.

143302442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71651223.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 143302442 is about 11970.8997990961. The cubic root of 143302442 is about 523.3005570865.

Adding to 143302442 its reverse (244203341), we get a palindrome (387505783).

The spelling of 143302442 in words is "one hundred forty-three million, three hundred two thousand, four hundred forty-two".