210434121 has 12 divisors (see below), whose sum is σ = 314442180. Its totient is φ = 135451680.

The previous prime is 210434111. The next prime is 210434129. The reversal of 210434121 is 121434012.

210434121 is a `hidden beast` number, since 210 + 43 + 412 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 159668496 + 50765625 = 12636^2 + 7125^2 .

It is not a de Polignac number, because 210434121 - 2⁵ = 210434089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210434094 and 210434103.

It is not an unprimeable number, because it can be changed into a prime (210434129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402870 + ... + 403391.

It is an arithmetic number, because the mean of its divisors is an integer number (26203515).

Almost surely, 2^210434121 is an apocalyptic number.

It is an amenable number.

210434121 is a deficient number, since it is larger than the sum of its proper divisors (104008059).

210434121 is a wasteful number, since it uses less digits than its factorization.

210434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806296 (or 806293 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 210434121 is about 14506.3476106152. The cubic root of 210434121 is about 594.8014977032.

Adding to 210434121 its reverse (121434012), we get a palindrome (331868133).

The spelling of 210434121 in words is "two hundred ten million, four hundred thirty-four thousand, one hundred twenty-one".