490842155 has 4 divisors (see below), whose sum is σ = 589010592. Its totient is φ = 392673720.

The previous prime is 490842133. The next prime is 490842161. The reversal of 490842155 is 551248094.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 490842155 - 2⁶ = 490842091 is a prime.

It is a super-2 number, since 2×490842155² = 481852042250088050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 49084211 + ... + 49084220.

It is an arithmetic number, because the mean of its divisors is an integer number (147252648).

Almost surely, 2^490842155 is an apocalyptic number.

490842155 is a deficient number, since it is larger than the sum of its proper divisors (98168437).

490842155 is an equidigital number, since it uses as much as digits as its factorization.

490842155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98168436.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 490842155 is about 22154.9577972967. The cubic root of 490842155 is about 788.8249127037.

The spelling of 490842155 in words is "four hundred ninety million, eight hundred forty-two thousand, one hundred fifty-five".