42443801 has 2 divisors, whose sum is σ = 42443802. Its totient is φ = 42443800.

The previous prime is 42443783. The next prime is 42443857. The reversal of 42443801 is 10834424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38738176 + 3705625 = 6224^2 + 1925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42443801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42442801) 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, 21221900 + 21221901.

It is an arithmetic number, because the mean of its divisors is an integer number (21221901).

Almost surely, 2^42443801 is an apocalyptic number.

It is an amenable number.

42443801 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443801 is an equidigital number, since it uses as much as digits as its factorization.

42443801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 42443801 is about 6514.8907128209. The cubic root of 42443801 is about 348.8227138200.

The spelling of 42443801 in words is "forty-two million, four hundred forty-three thousand, eight hundred one".