210243245 has 8 divisors (see below), whose sum is σ = 252489984. Its totient is φ = 168062544.

The previous prime is 210243217. The next prime is 210243251. The reversal of 210243245 is 542342012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 210243245 - 2²⁴ = 193466029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210243245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9209 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (31561248).

Almost surely, 2^210243245 is an apocalyptic number.

It is an amenable number.

210243245 is a deficient number, since it is larger than the sum of its proper divisors (42246739).

210243245 is a wasteful number, since it uses less digits than its factorization.

210243245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33019.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 210243245 is about 14499.7670670946. The cubic root of 210243245 is about 594.6216034374.

Adding to 210243245 its reverse (542342012), we get a palindrome (752585257).

The spelling of 210243245 in words is "two hundred ten million, two hundred forty-three thousand, two hundred forty-five".