242521011 has 6 divisors (see below), whose sum is σ = 350308140. Its totient is φ = 161680668.

The previous prime is 242521009. The next prime is 242521021. The reversal of 242521011 is 110125242.

It is not a de Polignac number, because 242521011 - 2¹ = 242521009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242521001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13473381 + ... + 13473398.

It is an arithmetic number, because the mean of its divisors is an integer number (58384690).

Almost surely, 2^242521011 is an apocalyptic number.

242521011 is a deficient number, since it is larger than the sum of its proper divisors (107787129).

242521011 is a wasteful number, since it uses less digits than its factorization.

242521011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946785 (or 26946782 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 242521011 is about 15573.0861103379. The cubic root of 242521011 is about 623.6148618823.

Adding to 242521011 its reverse (110125242), we get a palindrome (352646253).

It can be divided in two parts, 2425 and 21011, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 242521011 in words is "two hundred forty-two million, five hundred twenty-one thousand, eleven".