210004105 has 4 divisors (see below), whose sum is σ = 252004932. Its totient is φ = 168003280.

The previous prime is 210004097. The next prime is 210004117. The reversal of 210004105 is 501400012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121418361 + 88585744 = 11019^2 + 9412^2 .

It is not a de Polignac number, because 210004105 - 2³ = 210004097 is a prime.

It is a Duffinian number.

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, 21000406 + ... + 21000415.

It is an arithmetic number, because the mean of its divisors is an integer number (63001233).

Almost surely, 2^210004105 is an apocalyptic number.

It is an amenable number.

210004105 is a deficient number, since it is larger than the sum of its proper divisors (42000827).

210004105 is an equidigital number, since it uses as much as digits as its factorization.

210004105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42000826.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 210004105 is about 14491.5183814533. The cubic root of 210004105 is about 594.3960682351.

Adding to 210004105 its reverse (501400012), we get a palindrome (711404117).

The spelling of 210004105 in words is "two hundred ten million, four thousand, one hundred five".