242530147 has 4 divisors (see below), whose sum is σ = 253074960. Its totient is φ = 231985336.

The previous prime is 242530139. The next prime is 242530157. The reversal of 242530147 is 741035242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242530147 - 2³ = 242530139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242530157) 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 3 ways as a sum of consecutive naturals, for example, 5272372 + ... + 5272417.

It is an arithmetic number, because the mean of its divisors is an integer number (63268740).

Almost surely, 2^242530147 is an apocalyptic number.

242530147 is a deficient number, since it is larger than the sum of its proper divisors (10544813).

242530147 is a wasteful number, since it uses less digits than its factorization.

242530147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544812.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 242530147 is about 15573.3794341498. The cubic root of 242530147 is about 623.6226925080.

Adding to 242530147 its reverse (741035242), we get a palindrome (983565389).

The spelling of 242530147 in words is "two hundred forty-two million, five hundred thirty thousand, one hundred forty-seven".