243125316242 has 16 divisors (see below), whose sum is σ = 379707119064. Its totient is φ = 116653488000.

The previous prime is 243125316193. The next prime is 243125316251. The reversal of 243125316242 is 242613521342.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31855467361 + 211269848881 = 178481^2 + 459641^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24297809 + ... + 24307812.

Almost surely, 2^243125316242 is an apocalyptic number.

243125316242 is a deficient number, since it is larger than the sum of its proper divisors (136581802822).

243125316242 is a wasteful number, since it uses less digits than its factorization.

243125316242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48605725.

The product of its digits is 69120, while the sum is 35.

Adding to 243125316242 its reverse (242613521342), we get a palindrome (485738837584).

The spelling of 243125316242 in words is "two hundred forty-three billion, one hundred twenty-five million, three hundred sixteen thousand, two hundred forty-two".