143420443409 has 2 divisors, whose sum is σ = 143420443410. Its totient is φ = 143420443408.

The previous prime is 143420443393. The next prime is 143420443499. The reversal of 143420443409 is 904344024341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143356890625 + 63552784 = 378625^2 + 7972^2 .

It is an emirp because it is prime and its reverse (904344024341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143420443409 - 2⁴ = 143420443393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143420443499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71710221704 + 71710221705.

It is an arithmetic number, because the mean of its divisors is an integer number (71710221705).

Almost surely, 2^143420443409 is an apocalyptic number.

It is an amenable number.

143420443409 is a deficient number, since it is larger than the sum of its proper divisors (1).

143420443409 is an equidigital number, since it uses as much as digits as its factorization.

143420443409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 143420443409 in words is "one hundred forty-three billion, four hundred twenty million, four hundred forty-three thousand, four hundred nine".