42524231 has 2 divisors, whose sum is σ = 42524232. Its totient is φ = 42524230.

The previous prime is 42524227. The next prime is 42524233. The reversal of 42524231 is 13242524.

It is a happy number.

42524231 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 42524231 - 2² = 42524227 is a prime.

It is a super-2 number, since 2×42524231² = 3616620444282722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 42524233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42524197 and 42524206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42524233) 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, 21262115 + 21262116.

It is an arithmetic number, because the mean of its divisors is an integer number (21262116).

Almost surely, 2^42524231 is an apocalyptic number.

42524231 is a deficient number, since it is larger than the sum of its proper divisors (1).

42524231 is an equidigital number, since it uses as much as digits as its factorization.

42524231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 23.

The square root of 42524231 is about 6521.0605732503. The cubic root of 42524231 is about 349.0429117220.

Adding to 42524231 its reverse (13242524), we get a palindrome (55766755).

The spelling of 42524231 in words is "forty-two million, five hundred twenty-four thousand, two hundred thirty-one".