42663473 has 2 divisors, whose sum is σ = 42663474. Its totient is φ = 42663472.

The previous prime is 42663469. The next prime is 42663499. The reversal of 42663473 is 37436624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34951744 + 7711729 = 5912^2 + 2777^2 .

It is a cyclic number.

It is not a de Polignac number, because 42663473 - 2² = 42663469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42663373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21331736 + 21331737.

It is an arithmetic number, because the mean of its divisors is an integer number (21331737).

Almost surely, 2^42663473 is an apocalyptic number.

It is an amenable number.

42663473 is a deficient number, since it is larger than the sum of its proper divisors (1).

42663473 is an equidigital number, since it uses as much as digits as its factorization.

42663473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 35.

The square root of 42663473 is about 6531.7281786676. The cubic root of 42663473 is about 349.4234671619.

The spelling of 42663473 in words is "forty-two million, six hundred sixty-three thousand, four hundred seventy-three".