143221041 has 12 divisors (see below), whose sum is σ = 214537232. Its totient is φ = 95480532.

The previous prime is 143221027. The next prime is 143221063. The reversal of 143221041 is 140122341.

It is not a de Polignac number, because 143221041 - 2¹⁰ = 143220017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143221021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294451 + ... + 294936.

Almost surely, 2^143221041 is an apocalyptic number.

It is an amenable number.

143221041 is a deficient number, since it is larger than the sum of its proper divisors (71316191).

143221041 is an frugal number, since it uses more digits than its factorization.

143221041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589402 (or 589390 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 143221041 is about 11967.4993628577. The cubic root of 143221041 is about 523.2014537351.

Adding to 143221041 its reverse (140122341), we get a palindrome (283343382).

The spelling of 143221041 in words is "one hundred forty-three million, two hundred twenty-one thousand, forty-one".