143641643 has 2 divisors, whose sum is σ = 143641644. Its totient is φ = 143641642.

The previous prime is 143641633. The next prime is 143641649. The reversal of 143641643 is 346146341.

143641643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143641643 - 2¹⁴ = 143625259 is a prime.

It is not a weakly prime, because it can be changed into another prime (143641649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71820821 + 71820822.

It is an arithmetic number, because the mean of its divisors is an integer number (71820822).

Almost surely, 2^143641643 is an apocalyptic number.

143641643 is a deficient number, since it is larger than the sum of its proper divisors (1).

143641643 is an equidigital number, since it uses as much as digits as its factorization.

143641643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 143641643 is about 11985.0591571339. The cubic root of 143641643 is about 523.7131208950.

Adding to 143641643 its reverse (346146341), we get a palindrome (489787984).

The spelling of 143641643 in words is "one hundred forty-three million, six hundred forty-one thousand, six hundred forty-three".