242521312131442 has 8 divisors (see below), whose sum is σ = 363790808923500. Its totient is φ = 121257709156944.

The previous prime is 242521312131433. The next prime is 242521312131443. The reversal of 242521312131442 is 244131213125242.

242521312131442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 239141821852521 + 3379490278921 = 15464211^2 + 1838339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (242521312131443) 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, 1473351517 + ... + 1473516112.

Almost surely, 2^{242521312131442} is an apocalyptic number.

242521312131442 is a deficient number, since it is larger than the sum of its proper divisors (121269496792058).

242521312131442 is a wasteful number, since it uses less digits than its factorization.

242521312131442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946908780.

The product of its digits is 92160, while the sum is 37.

Adding to 242521312131442 its reverse (244131213125242), we get a palindrome (486652525256684).

The spelling of 242521312131442 in words is "two hundred forty-two trillion, five hundred twenty-one billion, three hundred twelve million, one hundred thirty-one thousand, four hundred forty-two".