242520210 has 32 divisors (see below), whose sum is σ = 646721280. Its totient is φ = 64671984.

The previous prime is 242520203. The next prime is 242520221. The reversal of 242520210 is 12025242.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448842 + ... + 449381.

It is an arithmetic number, because the mean of its divisors is an integer number (20210040).

Almost surely, 2^242520210 is an apocalyptic number.

242520210 is an abundant number, since it is smaller than the sum of its proper divisors (404201070).

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

242520210 is a wasteful number, since it uses less digits than its factorization.

242520210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898239 (or 898233 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 242520210 is about 15573.0603928708. The cubic root of 242520210 is about 623.6141753217.

Adding to 242520210 its reverse (12025242), we get a palindrome (254545452).

The spelling of 242520210 in words is "two hundred forty-two million, five hundred twenty thousand, two hundred ten".