210242320 has 40 divisors (see below), whose sum is σ = 494718336. Its totient is φ = 83081088.

The previous prime is 210242317. The next prime is 210242321. The reversal of 210242320 is 23242012.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 210242294 and 210242303.

It is not an unprimeable number, because it can be changed into a prime (210242321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9192 + ... + 22471.

Almost surely, 2^210242320 is an apocalyptic number.

210242320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210242320 is an abundant number, since it is smaller than the sum of its proper divisors (284476016).

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

210242320 is a wasteful number, since it uses less digits than its factorization.

210242320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31759 (or 31753 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 210242320 is about 14499.7351699953. The cubic root of 210242320 is about 594.6207313907.

Adding to 210242320 its reverse (23242012), we get a palindrome (233484332).

The spelling of 210242320 in words is "two hundred ten million, two hundred forty-two thousand, three hundred twenty".