242120545245 has 48 divisors (see below), whose sum is σ = 427178793600. Its totient is φ = 126826289280.

The previous prime is 242120545237. The next prime is 242120545379. The reversal of 242120545245 is 542545021242.

242120545245 is a `hidden beast` number, since 2 + 4 + 2 + 120 + 5 + 4 + 524 + 5 = 666.

It is not a de Polignac number, because 242120545245 - 2³ = 242120545237 is a prime.

It is a super-2 number, since 2×242120545245² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2903280 + ... + 2985510.

It is an arithmetic number, because the mean of its divisors is an integer number (8899558200).

Almost surely, 2^242120545245 is an apocalyptic number.

It is an amenable number.

242120545245 is a deficient number, since it is larger than the sum of its proper divisors (185058248355).

242120545245 is a wasteful number, since it uses less digits than its factorization.

242120545245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83410 (or 83407 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 242120545245 its reverse (542545021242), we get a palindrome (784665566487).

The spelling of 242120545245 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, two hundred forty-five".