143305642 has 8 divisors (see below), whose sum is σ = 217548576. Its totient is φ = 70789452.

The previous prime is 143305639. The next prime is 143305649. The reversal of 143305642 is 246503341.

143305642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 143305642.

It is not an unprimeable number, because it can be changed into a prime (143305649) 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 in 3 ways as a sum of consecutive naturals, for example, 431478 + ... + 431809.

It is an arithmetic number, because the mean of its divisors is an integer number (27193572).

Almost surely, 2^143305642 is an apocalyptic number.

143305642 is a deficient number, since it is larger than the sum of its proper divisors (74242934).

143305642 is an equidigital number, since it uses as much as digits as its factorization.

143305642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863372.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 143305642 is about 11971.0334558049. The cubic root of 143305642 is about 523.3044522267.

Adding to 143305642 its reverse (246503341), we get a palindrome (389808983).

The spelling of 143305642 in words is "one hundred forty-three million, three hundred five thousand, six hundred forty-two".