42663193 has 2 divisors, whose sum is σ = 42663194. Its totient is φ = 42663192.

The previous prime is 42663157. The next prime is 42663197. The reversal of 42663193 is 39136624.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42406144 + 257049 = 6512^2 + 507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42663193 is a prime.

It is not a weakly prime, because it can be changed into another prime (42663197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21331596 + 21331597.

It is an arithmetic number, because the mean of its divisors is an integer number (21331597).

Almost surely, 2^42663193 is an apocalyptic number.

It is an amenable number.

42663193 is a deficient number, since it is larger than the sum of its proper divisors (1).

42663193 is an equidigital number, since it uses as much as digits as its factorization.

42663193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 42663193 is about 6531.7067447950. The cubic root of 42663193 is about 349.4227027392.

The spelling of 42663193 in words is "forty-two million, six hundred sixty-three thousand, one hundred ninety-three".