242521650 has 72 divisors (see below), whose sum is σ = 744666624. Its totient is φ = 55432800.

The previous prime is 242521633. The next prime is 242521651. The reversal of 242521650 is 56125242.

242521650 is a `hidden beast` number, since 2 + 4 + 2 + 5 + 2 + 1 + 650 = 666.

242521650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (242521651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35346 + ... + 41645.

It is an arithmetic number, because the mean of its divisors is an integer number (10342592).

Almost surely, 2^242521650 is an apocalyptic number.

242521650 is an abundant number, since it is smaller than the sum of its proper divisors (502144974).

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

242521650 is a wasteful number, since it uses less digits than its factorization.

242521650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77016 (or 77008 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 242521650 is about 15573.1066264891. The cubic root of 242521650 is about 623.6154095868.

Adding to 242521650 its reverse (56125242), we get a palindrome (298646892).

The spelling of 242521650 in words is "two hundred forty-two million, five hundred twenty-one thousand, six hundred fifty".