490042801 has 2 divisors, whose sum is σ = 490042802. Its totient is φ = 490042800.

The previous prime is 490042789. The next prime is 490042859. The reversal of 490042801 is 108240094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290668401 + 199374400 = 17049^2 + 14120^2 .

It is a cyclic number.

It is not a de Polignac number, because 490042801 - 2²³ = 481654193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490042801.

It is not a weakly prime, because it can be changed into another prime (490042601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245021400 + 245021401.

It is an arithmetic number, because the mean of its divisors is an integer number (245021401).

Almost surely, 2^490042801 is an apocalyptic number.

It is an amenable number.

490042801 is a deficient number, since it is larger than the sum of its proper divisors (1).

490042801 is an equidigital number, since it uses as much as digits as its factorization.

490042801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 490042801 is about 22136.9103761117. The cubic root of 490042801 is about 788.3964701829.

Adding to 490042801 its reverse (108240094), we get a palindrome (598282895).

The spelling of 490042801 in words is "four hundred ninety million, forty-two thousand, eight hundred one".