490138101 has 32 divisors (see below), whose sum is σ = 772312320. Its totient is φ = 306150912.

The previous prime is 490138097. The next prime is 490138147. The reversal of 490138101 is 101831094.

It is not a de Polignac number, because 490138101 - 2² = 490138097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490138151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104656 + ... + 109238.

It is an arithmetic number, because the mean of its divisors is an integer number (24134760).

Almost surely, 2^490138101 is an apocalyptic number.

It is an amenable number.

490138101 is a deficient number, since it is larger than the sum of its proper divisors (282174219).

490138101 is a wasteful number, since it uses less digits than its factorization.

490138101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 490138101 is about 22139.0627850413. The cubic root of 490138101 is about 788.4475740957.

Adding to 490138101 its reverse (101831094), we get a palindrome (591969195).

The spelling of 490138101 in words is "four hundred ninety million, one hundred thirty-eight thousand, one hundred one".