242015430243521 has 16 divisors (see below), whose sum is σ = 264047419468800. Its totient is φ = 219988540571520.

The previous prime is 242015430243511. The next prime is 242015430243557. The reversal of 242015430243521 is 125342034510242.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242015430243521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (242015430243511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5635714976 + ... + 5635757918.

It is an arithmetic number, because the mean of its divisors is an integer number (16502963716800).

Almost surely, 2^{242015430243521} is an apocalyptic number.

It is an amenable number.

242015430243521 is a deficient number, since it is larger than the sum of its proper divisors (22031989225279).

242015430243521 is a wasteful number, since it uses less digits than its factorization.

242015430243521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90376.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 242015430243521 its reverse (125342034510242), we get a palindrome (367357464753763).

The spelling of 242015430243521 in words is "two hundred forty-two trillion, fifteen billion, four hundred thirty million, two hundred forty-three thousand, five hundred twenty-one".