242521421210 has 16 divisors (see below), whose sum is σ = 436544280576. Its totient is φ = 97007296848.

The previous prime is 242521421179. The next prime is 242521421227. The reversal of 242521421210 is 12124125242.

It is a self number, because there is not a number n which added to its sum of digits gives 242521421210.

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, 1175627 + ... + 1366433.

It is an arithmetic number, because the mean of its divisors is an integer number (27284017536).

Almost surely, 2^242521421210 is an apocalyptic number.

242521421210 is a deficient number, since it is larger than the sum of its proper divisors (194022859366).

242521421210 is a wasteful number, since it uses less digits than its factorization.

242521421210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317917.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 242521421210 its reverse (12124125242), we get a palindrome (254645546452).

The spelling of 242521421210 in words is "two hundred forty-two billion, five hundred twenty-one million, four hundred twenty-one thousand, two hundred ten".