100490 has 16 divisors (see below), whose sum is σ = 195048. Its totient is φ = 37056.

The previous prime is 100483. The next prime is 100493. The reversal of 100490 is 94001.

It is a Cunningham number, because it is equal to 317²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 36481 + 64009 = 191^2 + 253^2 .

It is a plaindrome in base 14 and base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 100490.

It is not an unprimeable number, because it can be changed into a prime (100493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257 + ... + 516.

2¹⁰⁰⁴⁹⁰ is an apocalyptic number.

100490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100490 is a deficient number, since it is larger than the sum of its proper divisors (94558).

100490 is a wasteful number, since it uses less digits than its factorization.

100490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 100490 is about 317.0015772831. The cubic root of 100490 is about 46.4915774625.

Adding to 100490 its reverse (94001), we get a palindrome (194491).

The spelling of 100490 in words is "one hundred thousand, four hundred ninety".