42427543 has 2 divisors, whose sum is σ = 42427544. Its totient is φ = 42427542.

The previous prime is 42427537. The next prime is 42427573. The reversal of 42427543 is 34572424.

It is a happy number.

42427543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42427543 - 2²¹ = 40330391 is a prime.

It is a super-3 number, since 3×42427543³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42427573) 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, 21213771 + 21213772.

It is an arithmetic number, because the mean of its divisors is an integer number (21213772).

Almost surely, 2^42427543 is an apocalyptic number.

42427543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42427543 is an equidigital number, since it uses as much as digits as its factorization.

42427543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 31.

The square root of 42427543 is about 6513.6428363858. The cubic root of 42427543 is about 348.7781695535.

Adding to 42427543 its reverse (34572424), we get a palindrome (76999967).

The spelling of 42427543 in words is "forty-two million, four hundred twenty-seven thousand, five hundred forty-three".