242438523 has 4 divisors (see below), whose sum is σ = 323251368. Its totient is φ = 161625680.

The previous prime is 242438519. The next prime is 242438533. The reversal of 242438523 is 325834242.

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 242438523 - 2² = 242438519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242438533) 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, 40406418 + ... + 40406423.

It is an arithmetic number, because the mean of its divisors is an integer number (80812842).

Almost surely, 2^242438523 is an apocalyptic number.

242438523 is a deficient number, since it is larger than the sum of its proper divisors (80812845).

242438523 is an equidigital number, since it uses as much as digits as its factorization.

242438523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80812844.

The product of its digits is 46080, while the sum is 33.

The square root of 242438523 is about 15570.4374697694. The cubic root of 242438523 is about 623.5441510660.

The spelling of 242438523 in words is "two hundred forty-two million, four hundred thirty-eight thousand, five hundred twenty-three".