42666433 has 2 divisors, whose sum is σ = 42666434. Its totient is φ = 42666432.

The previous prime is 42666397. The next prime is 42666443. The reversal of 42666433 is 33466624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37063744 + 5602689 = 6088^2 + 2367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42666433 is a prime.

It is not a weakly prime, because it can be changed into another prime (42666443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21333216 + 21333217.

It is an arithmetic number, because the mean of its divisors is an integer number (21333217).

Almost surely, 2^42666433 is an apocalyptic number.

It is an amenable number.

42666433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42666433 is an equidigital number, since it uses as much as digits as its factorization.

42666433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 34.

The square root of 42666433 is about 6531.9547610191. The cubic root of 42666433 is about 349.4315479976.

The spelling of 42666433 in words is "forty-two million, six hundred sixty-six thousand, four hundred thirty-three".