42024242 has 16 divisors (see below), whose sum is σ = 69000792. Its totient is φ = 19077120.

The previous prime is 42024239. The next prime is 42024247. The reversal of 42024242 is 24242024.

It can be written as a sum of positive squares in 4 ways, for example, as 26822041 + 15202201 = 5179^2 + 3899^2 .

It is not an unprimeable number, because it can be changed into a prime (42024247) 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, 11663 + ... + 14834.

Almost surely, 2^42024242 is an apocalyptic number.

42024242 is a deficient number, since it is larger than the sum of its proper divisors (26976550).

42024242 is a wasteful number, since it uses less digits than its factorization.

42024242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26573.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 42024242 is about 6482.6107395092. The cubic root of 42024242 is about 347.6695292749.

Adding to 42024242 its reverse (24242024), we get a palindrome (66266266).

The spelling of 42024242 in words is "forty-two million, twenty-four thousand, two hundred forty-two".