100840490 has 8 divisors (see below), whose sum is σ = 181512900. Its totient is φ = 40336192.

The previous prime is 100840483. The next prime is 100840507. The reversal of 100840490 is 94048001.

It can be written as a sum of positive squares in 2 ways, for example, as 96609241 + 4231249 = 9829^2 + 2057^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5042015 + ... + 5042034.

Almost surely, 2^100840490 is an apocalyptic number.

100840490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100840490 is a deficient number, since it is larger than the sum of its proper divisors (80672410).

100840490 is a wasteful number, since it uses less digits than its factorization.

100840490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084056.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 100840490 is about 10041.9365662207. The cubic root of 100840490 is about 465.4556600255.

Adding to 100840490 its reverse (94048001), we get a palindrome (194888491).

The spelling of 100840490 in words is "one hundred million, eight hundred forty thousand, four hundred ninety".