490121 has 2 divisors, whose sum is σ = 490122. Its totient is φ = 490120.

The previous prime is 490117. The next prime is 490151. The reversal of 490121 is 121094.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490000 + 121 = 700^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 490121 - 2² = 490117 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 490121.

It is not a weakly prime, because it can be changed into another prime (490111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245060 + 245061.

It is an arithmetic number, because the mean of its divisors is an integer number (245061).

2⁴⁹⁰¹²¹ is an apocalyptic number.

It is an amenable number.

490121 is a deficient number, since it is larger than the sum of its proper divisors (1).

490121 is an equidigital number, since it uses as much as digits as its factorization.

490121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 490121 is about 700.0864232364. The cubic root of 490121 is about 78.8438404300.

The spelling of 490121 in words is "four hundred ninety thousand, one hundred twenty-one".