242120455011 has 6 divisors (see below), whose sum is σ = 349729546140. Its totient is φ = 161413636668.

The previous prime is 242120455009. The next prime is 242120455033. The reversal of 242120455011 is 110554021242.

It is a happy number.

It is not a de Polignac number, because 242120455011 - 2¹ = 242120455009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242120455081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13451136381 + ... + 13451136398.

It is an arithmetic number, because the mean of its divisors is an integer number (58288257690).

Almost surely, 2^242120455011 is an apocalyptic number.

242120455011 is a deficient number, since it is larger than the sum of its proper divisors (107609091129).

242120455011 is a wasteful number, since it uses less digits than its factorization.

242120455011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26902272785 (or 26902272782 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 242120455011 its reverse (110554021242), we get a palindrome (352674476253).

The spelling of 242120455011 in words is "two hundred forty-two billion, one hundred twenty million, four hundred fifty-five thousand, eleven".