243338227442 has 6 divisors (see below), whose sum is σ = 365008387599. Its totient is φ = 121668764910.

The previous prime is 243338227441. The next prime is 243338227493. The reversal of 243338227442 is 244722833342.

243338227442 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 only one way, i.e., 121669113721 + 121669113721 = 348811^2 + 348811^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=348811.

It is a super-2 number, since 2×243338227442² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243338227393 and 243338227402.

It is not an unprimeable number, because it can be changed into a prime (243338227441) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 523217 + ... + 872027.

Almost surely, 2^243338227442 is an apocalyptic number.

243338227442 is a deficient number, since it is larger than the sum of its proper divisors (121670160157).

243338227442 is an frugal number, since it uses more digits than its factorization.

243338227442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697624 (or 348813 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 44.

The spelling of 243338227442 in words is "two hundred forty-three billion, three hundred thirty-eight million, two hundred twenty-seven thousand, four hundred forty-two".