42244424 has 8 divisors (see below), whose sum is σ = 79208310. Its totient is φ = 21122208.

The previous prime is 42244421. The next prime is 42244453. The reversal of 42244424 is 42444224.

It can be written as a sum of positive squares in only one way, i.e., 38316100 + 3928324 = 6190^2 + 1982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 42244393 and 42244402.

It is not an unprimeable number, because it can be changed into a prime (42244421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2640269 + ... + 2640284.

Almost surely, 2^42244424 is an apocalyptic number.

It is an amenable number.

42244424 is a deficient number, since it is larger than the sum of its proper divisors (36963886).

42244424 is a wasteful number, since it uses less digits than its factorization.

42244424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280559 (or 5280555 counting only the distinct ones).

The product of its digits is 8192, while the sum is 26.

The square root of 42244424 is about 6499.5710627702. The cubic root of 42244424 is about 348.2756656644.

Adding to 42244424 its reverse (42444224), we get a palindrome (84688648).

The spelling of 42244424 in words is "forty-two million, two hundred forty-four thousand, four hundred twenty-four".