242151310411521 has 16 divisors (see below), whose sum is σ = 369726056469504. Its totient is φ = 138097083579984.

The previous prime is 242151310411511. The next prime is 242151310411523. The reversal of 242151310411521 is 125114013151242.

It is a happy number.

It is not a de Polignac number, because 242151310411521 - 2⁶ = 242151310411457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242151310411523) 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, 11462230771 + ... + 11462251896.

It is an arithmetic number, because the mean of its divisors is an integer number (23107878529344).

Almost surely, 2^{242151310411521} is an apocalyptic number.

242151310411521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

242151310411521 is a deficient number, since it is larger than the sum of its proper divisors (127574746057983).

242151310411521 is a wasteful number, since it uses less digits than its factorization.

242151310411521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22924483180.

The product of its (nonzero) digits is 9600, while the sum is 33.

Adding to 242151310411521 its reverse (125114013151242), we get a palindrome (367265323562763).

The spelling of 242151310411521 in words is "two hundred forty-two trillion, one hundred fifty-one billion, three hundred ten million, four hundred eleven thousand, five hundred twenty-one".