143220541 has 2 divisors, whose sum is σ = 143220542. Its totient is φ = 143220540.

The previous prime is 143220533. The next prime is 143220547. The reversal of 143220541 is 145022341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95472441 + 47748100 = 9771^2 + 6910^2 .

It is an emirp because it is prime and its reverse (145022341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143220541 - 2³ = 143220533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143220547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71610270 + 71610271.

It is an arithmetic number, because the mean of its divisors is an integer number (71610271).

Almost surely, 2^143220541 is an apocalyptic number.

It is an amenable number.

143220541 is a deficient number, since it is larger than the sum of its proper divisors (1).

143220541 is an equidigital number, since it uses as much as digits as its factorization.

143220541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 143220541 is about 11967.4784729282. The cubic root of 143220541 is about 523.2008448836.

Adding to 143220541 its reverse (145022341), we get a palindrome (288242882).

The spelling of 143220541 in words is "one hundred forty-three million, two hundred twenty thousand, five hundred forty-one".