143223142 has 4 divisors (see below), whose sum is σ = 214834716. Its totient is φ = 71611570.

The previous prime is 143223133. The next prime is 143223163. The reversal of 143223142 is 241322341.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35805784 + ... + 35805787.

It is an arithmetic number, because the mean of its divisors is an integer number (53708679).

Almost surely, 2^143223142 is an apocalyptic number.

143223142 is a deficient number, since it is larger than the sum of its proper divisors (71611574).

143223142 is an equidigital number, since it uses as much as digits as its factorization.

143223142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71611573.

The product of its digits is 1152, while the sum is 22.

The square root of 143223142 is about 11967.5871419430. The cubic root of 143223142 is about 523.2040121136.

Adding to 143223142 its reverse (241322341), we get a palindrome (384545483).

The spelling of 143223142 in words is "one hundred forty-three million, two hundred twenty-three thousand, one hundred forty-two".