210442230 has 24 divisors (see below), whose sum is σ = 547150032. Its totient is φ = 56117904.

The previous prime is 210442189. The next prime is 210442231. The reversal of 210442230 is 32244012.

210442230 is a `hidden beast` number, since 210 + 4 + 422 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210442231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1169034 + ... + 1169213.

It is an arithmetic number, because the mean of its divisors is an integer number (22797918).

Almost surely, 2^210442230 is an apocalyptic number.

210442230 is an abundant number, since it is smaller than the sum of its proper divisors (336707802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210442230 is a wasteful number, since it uses less digits than its factorization.

210442230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338260 (or 2338257 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 210442230 is about 14506.6271062573. The cubic root of 210442230 is about 594.8091377561.

Adding to 210442230 its reverse (32244012), we get a palindrome (242686242).

The spelling of 210442230 in words is "two hundred ten million, four hundred forty-two thousand, two hundred thirty".