100400210 has 16 divisors (see below), whose sum is σ = 180883800. Its totient is φ = 40123776.

The previous prime is 100400207. The next prime is 100400257. The reversal of 100400210 is 12004001.

It can be written as a sum of positive squares in 4 ways, for example, as 94264681 + 6135529 = 9709^2 + 2477^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8996 + ... + 16784.

Almost surely, 2^100400210 is an apocalyptic number.

100400210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100400210 is a deficient number, since it is larger than the sum of its proper divisors (80483590).

100400210 is a wasteful number, since it uses less digits than its factorization.

100400210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9085.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 100400210 is about 10019.9905189576. The cubic root of 100400210 is about 464.7772625774. Note that the first 3 decimals are identical.

Adding to 100400210 its reverse (12004001), we get a palindrome (112404211).

The spelling of 100400210 in words is "one hundred million, four hundred thousand, two hundred ten".