42243523 has 8 divisors (see below), whose sum is σ = 48350048. Its totient is φ = 36154944.

The previous prime is 42243511. The next prime is 42243527. The reversal of 42243523 is 32534224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42243523 - 2²¹ = 40146371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42243527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015 + ... + 9247.

It is an arithmetic number, because the mean of its divisors is an integer number (6043756).

Almost surely, 2^42243523 is an apocalyptic number.

42243523 is a deficient number, since it is larger than the sum of its proper divisors (6106525).

42243523 is an equidigital number, since it uses as much as digits as its factorization.

42243523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8973.

The product of its digits is 5760, while the sum is 25.

The square root of 42243523 is about 6499.5017501344. The cubic root of 42243523 is about 348.2731896090.

Adding to 42243523 its reverse (32534224), we get a palindrome (74777747).

The spelling of 42243523 in words is "forty-two million, two hundred forty-three thousand, five hundred twenty-three".