210421234 has 8 divisors (see below), whose sum is σ = 315694080. Its totient is φ = 105189876.

The previous prime is 210421217. The next prime is 210421261. The reversal of 210421234 is 432124012.

210421234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 11727 + ... + 23629.

It is an arithmetic number, because the mean of its divisors is an integer number (39461760).

Almost surely, 2^210421234 is an apocalyptic number.

210421234 is a deficient number, since it is larger than the sum of its proper divisors (105272846).

210421234 is a wasteful number, since it uses less digits than its factorization.

210421234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20744.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 210421234 is about 14505.9034189533. The cubic root of 210421234 is about 594.7893555605.

Adding to 210421234 its reverse (432124012), we get a palindrome (642545246).

The spelling of 210421234 in words is "two hundred ten million, four hundred twenty-one thousand, two hundred thirty-four".