42355543 has 2 divisors, whose sum is σ = 42355544. Its totient is φ = 42355542.

The previous prime is 42355513. The next prime is 42355561. The reversal of 42355543 is 34555324.

It is a happy number.

42355543 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 42355543 - 2⁹ = 42355031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42355513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21177771 + 21177772.

It is an arithmetic number, because the mean of its divisors is an integer number (21177772).

Almost surely, 2^42355543 is an apocalyptic number.

42355543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42355543 is an equidigital number, since it uses as much as digits as its factorization.

42355543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 31.

The square root of 42355543 is about 6508.1136283873. The cubic root of 42355543 is about 348.5807644014.

The spelling of 42355543 in words is "forty-two million, three hundred fifty-five thousand, five hundred forty-three".