210421030 has 8 divisors (see below), whose sum is σ = 378757872. Its totient is φ = 84168408.

The previous prime is 210421027. The next prime is 210421039. The reversal of 210421030 is 30124012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 210421030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210421039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10521042 + ... + 10521061.

It is an arithmetic number, because the mean of its divisors is an integer number (47344734).

Almost surely, 2^210421030 is an apocalyptic number.

210421030 is a deficient number, since it is larger than the sum of its proper divisors (168336842).

210421030 is a wasteful number, since it uses less digits than its factorization.

210421030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042110.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 210421030 is about 14505.8963873316. The cubic root of 210421030 is about 594.7891633476.

Adding to 210421030 its reverse (30124012), we get a palindrome (240545042).

The spelling of 210421030 in words is "two hundred ten million, four hundred twenty-one thousand, thirty".