42444029 has 2 divisors, whose sum is σ = 42444030. Its totient is φ = 42444028.

The previous prime is 42444001. The next prime is 42444037. The reversal of 42444029 is 92044424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32376100 + 10067929 = 5690^2 + 3173^2 .

It is a cyclic number.

It is not a de Polignac number, because 42444029 - 2¹² = 42439933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42443992 and 42444010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42444079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222014 + 21222015.

It is an arithmetic number, because the mean of its divisors is an integer number (21222015).

Almost surely, 2^42444029 is an apocalyptic number.

It is an amenable number.

42444029 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444029 is an equidigital number, since it uses as much as digits as its factorization.

42444029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 42444029 is about 6514.9082111723. The cubic root of 42444029 is about 348.8233384219.

The spelling of 42444029 in words is "forty-two million, four hundred forty-four thousand, twenty-nine".