42534223 has 2 divisors, whose sum is σ = 42534224. Its totient is φ = 42534222.

The previous prime is 42534211. The next prime is 42534241. The reversal of 42534223 is 32243524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42534223 - 2¹³ = 42526031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42535223) 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 as a sum of consecutive naturals, namely, 21267111 + 21267112.

It is an arithmetic number, because the mean of its divisors is an integer number (21267112).

Almost surely, 2^42534223 is an apocalyptic number.

42534223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42534223 is an equidigital number, since it uses as much as digits as its factorization.

42534223 is an odious number, because the sum of its binary digits is odd.

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

The square root of 42534223 is about 6521.8266612967. The cubic root of 42534223 is about 349.0702480082.

Adding to 42534223 its reverse (32243524), we get a palindrome (74777747).

The spelling of 42534223 in words is "forty-two million, five hundred thirty-four thousand, two hundred twenty-three".