42443633 has 2 divisors, whose sum is σ = 42443634. Its totient is φ = 42443632.

The previous prime is 42443603. The next prime is 42443641. The reversal of 42443633 is 33634424.

42443633 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., 39526369 + 2917264 = 6287^2 + 1708^2 .

It is a cyclic number.

It is not a de Polignac number, because 42443633 - 2⁸ = 42443377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42443596 and 42443605.

It is not a weakly prime, because it can be changed into another prime (42443603) 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, 21221816 + 21221817.

It is an arithmetic number, because the mean of its divisors is an integer number (21221817).

Almost surely, 2^42443633 is an apocalyptic number.

It is an amenable number.

42443633 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443633 is an equidigital number, since it uses as much as digits as its factorization.

42443633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 29.

The square root of 42443633 is about 6514.8778192688. The cubic root of 42443633 is about 348.8222535855.

The spelling of 42443633 in words is "forty-two million, four hundred forty-three thousand, six hundred thirty-three".