242321311511540 has 24 divisors (see below), whose sum is σ = 508880095708320. Its totient is φ = 96927507169568.

The previous prime is 242321311511537. The next prime is 242321311511599. The reversal of 242321311511540 is 45115113123242.

It is a self number, because there is not a number n which added to its sum of digits gives 242321311511540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61635242 + ... + 65448801.

It is an arithmetic number, because the mean of its divisors is an integer number (21203337321180).

Almost surely, 2^{242321311511540} is an apocalyptic number.

242321311511540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242321311511540 is an abundant number, since it is smaller than the sum of its proper divisors (266558784196780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242321311511540 is a wasteful number, since it uses less digits than its factorization.

242321311511540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127179391 (or 127179389 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 242321311511540 its reverse (45115113123242), we get a palindrome (287436424634782).

The spelling of 242321311511540 in words is "two hundred forty-two trillion, three hundred twenty-one billion, three hundred eleven million, five hundred eleven thousand, five hundred forty".