242120240345 has 8 divisors (see below), whose sum is σ = 300563057160. Its totient is φ = 187017013120.

The previous prime is 242120240273. The next prime is 242120240363. The reversal of 242120240345 is 543042021242.

It can be written as a sum of positive squares in 4 ways, for example, as 81117875344 + 161002365001 = 284812^2 + 401251^2 .

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

It is not a de Polignac number, because 242120240345 - 2¹² = 242120236249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 834897236 + ... + 834897525.

It is an arithmetic number, because the mean of its divisors is an integer number (37570382145).

Almost surely, 2^242120240345 is an apocalyptic number.

It is an amenable number.

242120240345 is a deficient number, since it is larger than the sum of its proper divisors (58442816815).

242120240345 is a wasteful number, since it uses less digits than its factorization.

242120240345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669794795.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 242120240345 its reverse (543042021242), we get a palindrome (785162261587).

The spelling of 242120240345 in words is "two hundred forty-two billion, one hundred twenty million, two hundred forty thousand, three hundred forty-five".