42490333 has 2 divisors, whose sum is σ = 42490334. Its totient is φ = 42490332.

The previous prime is 42490313. The next prime is 42490337. The reversal of 42490333 is 33309424.

42490333 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., 42471289 + 19044 = 6517^2 + 138^2 .

It is a cyclic number.

It is not a de Polignac number, because 42490333 - 2²¹ = 40393181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42490337) 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, 21245166 + 21245167.

It is an arithmetic number, because the mean of its divisors is an integer number (21245167).

Almost surely, 2^42490333 is an apocalyptic number.

It is an amenable number.

42490333 is a deficient number, since it is larger than the sum of its proper divisors (1).

42490333 is an equidigital number, since it uses as much as digits as its factorization.

42490333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 42490333 is about 6518.4609379822. The cubic root of 42490333 is about 348.9501410699.

Adding to 42490333 its reverse (33309424), we get a palindrome (75799757).

The spelling of 42490333 in words is "forty-two million, four hundred ninety thousand, three hundred thirty-three".