243140122 has 4 divisors (see below), whose sum is σ = 364710186. Its totient is φ = 121570060.

The previous prime is 243140101. The next prime is 243140123. The reversal of 243140122 is 221041342.

243140122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 243016921 + 123201 = 15589^2 + 351^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243140122.

It is not an unprimeable number, because it can be changed into a prime (243140123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60785029 + ... + 60785032.

Almost surely, 2^243140122 is an apocalyptic number.

243140122 is a deficient number, since it is larger than the sum of its proper divisors (121570064).

243140122 is a wasteful number, since it uses less digits than its factorization.

243140122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121570063.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 243140122 is about 15592.9510356443. The cubic root of 243140122 is about 624.1450685207.

Adding to 243140122 its reverse (221041342), we get a palindrome (464181464).

The spelling of 243140122 in words is "two hundred forty-three million, one hundred forty thousand, one hundred twenty-two".