242460521 has 12 divisors (see below), whose sum is σ = 249045372. Its totient is φ = 236003328.

The previous prime is 242460509. The next prime is 242460529. The reversal of 242460521 is 125064242.

It can be written as a sum of positive squares in 6 ways, for example, as 1000000 + 241460521 = 1000^2 + 15539^2 .

It is a de Polignac number, because none of the positive numbers 2^k-242460521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242460529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686681 + ... + 687033.

It is an arithmetic number, because the mean of its divisors is an integer number (20753781).

Almost surely, 2^242460521 is an apocalyptic number.

It is an amenable number.

242460521 is a deficient number, since it is larger than the sum of its proper divisors (6584851).

242460521 is an frugal number, since it uses more digits than its factorization.

242460521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 242460521 is about 15571.1438565059. The cubic root of 242460521 is about 623.5630098805.

The spelling of 242460521 in words is "two hundred forty-two million, four hundred sixty thousand, five hundred twenty-one".