42443069 has 2 divisors, whose sum is σ = 42443070. Its totient is φ = 42443068.

The previous prime is 42443039. The next prime is 42443087. The reversal of 42443069 is 96034424.

42443069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41860900 + 582169 = 6470^2 + 763^2 .

It is a cyclic number.

It is not a de Polignac number, because 42443069 - 2¹² = 42438973 is a prime.

It is a super-2 number, since 2×42443069² = 3602828212277522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42443039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21221534 + 21221535.

It is an arithmetic number, because the mean of its divisors is an integer number (21221535).

Almost surely, 2^42443069 is an apocalyptic number.

It is an amenable number.

42443069 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443069 is an equidigital number, since it uses as much as digits as its factorization.

42443069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 42443069 is about 6514.8345335856. The cubic root of 42443069 is about 348.8207085040.

The spelling of 42443069 in words is "forty-two million, four hundred forty-three thousand, sixty-nine".