42824437 has 2 divisors, whose sum is σ = 42824438. Its totient is φ = 42824436.

The previous prime is 42824417. The next prime is 42824471. The reversal of 42824437 is 73442824.

It is an a-pointer prime, because the next prime (42824471) can be obtained adding 42824437 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35212356 + 7612081 = 5934^2 + 2759^2 .

It is a cyclic number.

It is not a de Polignac number, because 42824437 - 2¹⁹ = 42300149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42824407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21412218 + 21412219.

It is an arithmetic number, because the mean of its divisors is an integer number (21412219).

Almost surely, 2^42824437 is an apocalyptic number.

It is an amenable number.

42824437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42824437 is an equidigital number, since it uses as much as digits as its factorization.

42824437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 34.

The square root of 42824437 is about 6544.0382792279. The cubic root of 42824437 is about 349.8623594842.

The spelling of 42824437 in words is "forty-two million, eight hundred twenty-four thousand, four hundred thirty-seven".