442343543 has 2 divisors, whose sum is σ = 442343544. Its totient is φ = 442343542.

The previous prime is 442343533. The next prime is 442343563. The reversal of 442343543 is 345343244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442343543 - 2²⁴ = 425566327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442343533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221171771 + 221171772.

It is an arithmetic number, because the mean of its divisors is an integer number (221171772).

Almost surely, 2^442343543 is an apocalyptic number.

442343543 is a deficient number, since it is larger than the sum of its proper divisors (1).

442343543 is an equidigital number, since it uses as much as digits as its factorization.

442343543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 32.

The square root of 442343543 is about 21031.9647917164. The cubic root of 442343543 is about 761.9384627778.

Adding to 442343543 its reverse (345343244), we get a palindrome (787686787).

The spelling of 442343543 in words is "four hundred forty-two million, three hundred forty-three thousand, five hundred forty-three".