42444041 has 2 divisors, whose sum is σ = 42444042. Its totient is φ = 42444040.

The previous prime is 42444037. The next prime is 42444071. The reversal of 42444041 is 14044424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31685641 + 10758400 = 5629^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 42444041 - 2² = 42444037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42443998 and 42444016.

It is not a weakly prime, because it can be changed into another prime (42444001) 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 as a sum of consecutive naturals, namely, 21222020 + 21222021.

It is an arithmetic number, because the mean of its divisors is an integer number (21222021).

Almost surely, 2^42444041 is an apocalyptic number.

It is an amenable number.

42444041 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444041 is an equidigital number, since it uses as much as digits as its factorization.

42444041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 42444041 is about 6514.9091321368. The cubic root of 42444041 is about 348.8233712956.

Adding to 42444041 its reverse (14044424), we get a palindrome (56488465).

The spelling of 42444041 in words is "forty-two million, four hundred forty-four thousand, forty-one".