42424543 has 6 divisors (see below), whose sum is σ = 49351056. Its totient is φ = 36363852.

The previous prime is 42424519. The next prime is 42424561. The reversal of 42424543 is 34542424.

It is not a de Polignac number, because 42424543 - 2¹³ = 42416351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42424573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 432855 + ... + 432952.

It is an arithmetic number, because the mean of its divisors is an integer number (8225176).

Almost surely, 2^42424543 is an apocalyptic number.

42424543 is a deficient number, since it is larger than the sum of its proper divisors (6926513).

42424543 is an equidigital number, since it uses as much as digits as its factorization.

42424543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865821 (or 865814 counting only the distinct ones).

The product of its digits is 15360, while the sum is 28.

The square root of 42424543 is about 6513.4125464306. The cubic root of 42424543 is about 348.7699487996.

Adding to 42424543 its reverse (34542424), we get a palindrome (76966967).

The spelling of 42424543 in words is "forty-two million, four hundred twenty-four thousand, five hundred forty-three".