242505202540 has 12 divisors (see below), whose sum is σ = 509260925376. Its totient is φ = 97002081008.

The previous prime is 242505202483. The next prime is 242505202549. The reversal of 242505202540 is 45202505242.

It is not an unprimeable number, because it can be changed into a prime (242505202549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6062630044 + ... + 6062630083.

It is an arithmetic number, because the mean of its divisors is an integer number (42438410448).

Almost surely, 2^242505202540 is an apocalyptic number.

242505202540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242505202540 is an abundant number, since it is smaller than the sum of its proper divisors (266755722836).

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

242505202540 is a wasteful number, since it uses less digits than its factorization.

242505202540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125260136 (or 12125260134 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

Adding to 242505202540 its reverse (45202505242), we get a palindrome (287707707782).

The spelling of 242505202540 in words is "two hundred forty-two billion, five hundred five million, two hundred two thousand, five hundred forty".