242520147 has 24 divisors (see below), whose sum is σ = 372559824. Its totient is φ = 151494144.

The previous prime is 242520139. The next prime is 242520203. The reversal of 242520147 is 741025242.

It is not a de Polignac number, because 242520147 - 2³ = 242520139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242520147.

It is not an unprimeable number, because it can be changed into a prime (242520137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32248 + ... + 39050.

It is an arithmetic number, because the mean of its divisors is an integer number (15523326).

Almost surely, 2^242520147 is an apocalyptic number.

242520147 is a deficient number, since it is larger than the sum of its proper divisors (130039677).

242520147 is a wasteful number, since it uses less digits than its factorization.

242520147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059 (or 7056 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 242520147 is about 15573.0583701468. The cubic root of 242520147 is about 623.6141213225.

Adding to 242520147 its reverse (741025242), we get a palindrome (983545389).

The spelling of 242520147 in words is "two hundred forty-two million, five hundred twenty thousand, one hundred forty-seven".