42718244 has 18 divisors (see below), whose sum is σ = 75438930. Its totient is φ = 21165952.

The previous prime is 42718243. The next prime is 42718259. The reversal of 42718244 is 44281724.

It can be written as a sum of positive squares in 3 ways, for example, as 3655744 + 39062500 = 1912^2 + 6250^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42718244.

It is not an unprimeable number, because it can be changed into a prime (42718243) 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 5 ways as a sum of consecutive naturals, for example, 74792 + ... + 75360.

Almost surely, 2^42718244 is an apocalyptic number.

It is an amenable number.

42718244 is a deficient number, since it is larger than the sum of its proper divisors (32720686).

42718244 is a wasteful number, since it uses less digits than its factorization.

42718244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 708 counting only the distinct ones).

The product of its digits is 14336, while the sum is 32.

The square root of 42718244 is about 6535.9195221484. The cubic root of 42718244 is about 349.5729321677.

Adding to 42718244 its reverse (44281724), we get a palindrome (86999968).

The spelling of 42718244 in words is "forty-two million, seven hundred eighteen thousand, two hundred forty-four".