242230545 has 24 divisors (see below), whose sum is σ = 421138536. Its totient is φ = 128798208.

The previous prime is 242230543. The next prime is 242230579. The reversal of 242230545 is 545032242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25522704 + 216707841 = 5052^2 + 14721^2 .

It is not a de Polignac number, because 242230545 - 2¹ = 242230543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242230543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7179 + ... + 23151.

It is an arithmetic number, because the mean of its divisors is an integer number (17547439).

Almost surely, 2^242230545 is an apocalyptic number.

It is an amenable number.

242230545 is a deficient number, since it is larger than the sum of its proper divisors (178907991).

242230545 is a wasteful number, since it uses less digits than its factorization.

242230545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16321 (or 16318 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 242230545 is about 15563.7574190810. The cubic root of 242230545 is about 623.3657957935.

Adding to 242230545 its reverse (545032242), we get a palindrome (787262787).

The spelling of 242230545 in words is "two hundred forty-two million, two hundred thirty thousand, five hundred forty-five".