242120530 has 32 divisors (see below), whose sum is σ = 449064000. Its totient is φ = 93936192.

The previous prime is 242120503. The next prime is 242120531. The reversal of 242120530 is 35021242.

It is a junction number, because it is equal to n+sod(n) for n = 242120498 and 242120507.

It is not an unprimeable number, because it can be changed into a prime (242120531) 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 15 ways as a sum of consecutive naturals, for example, 62181 + ... + 65959.

It is an arithmetic number, because the mean of its divisors is an integer number (14033250).

Almost surely, 2^242120530 is an apocalyptic number.

242120530 is a deficient number, since it is larger than the sum of its proper divisors (206943470).

242120530 is a wasteful number, since it uses less digits than its factorization.

242120530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 242120530 is about 15560.2226847819. Note that the first 3 decimals coincide. The cubic root of 242120530 is about 623.2714091655.

Adding to 242120530 its reverse (35021242), we get a palindrome (277141772).

The spelling of 242120530 in words is "two hundred forty-two million, one hundred twenty thousand, five hundred thirty".