242122253445 has 24 divisors (see below), whose sum is σ = 420023514456. Its totient is φ = 129025732608.

The previous prime is 242122253423. The next prime is 242122253453. The reversal of 242122253445 is 544352221242.

242122253445 is a `hidden beast` number, since 2 + 42 + 122 + 2 + 53 + 445 = 666.

242122253445 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 4 ways, for example, as 4284618849 + 237837634596 = 65457^2 + 487686^2 .

It is not a de Polignac number, because 242122253445 - 2⁸ = 242122253189 is a prime.

It is a super-2 number, since 2×242122253445² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2155792 + ... + 2265321.

It is an arithmetic number, because the mean of its divisors is an integer number (17500979769).

Almost surely, 2^242122253445 is an apocalyptic number.

It is an amenable number.

242122253445 is a deficient number, since it is larger than the sum of its proper divisors (177901261011).

242122253445 is a wasteful number, since it uses less digits than its factorization.

242122253445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422341 (or 4422338 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

Adding to 242122253445 its reverse (544352221242), we get a palindrome (786474474687).

The spelling of 242122253445 in words is "two hundred forty-two billion, one hundred twenty-two million, two hundred fifty-three thousand, four hundred forty-five".