243121241254 has 4 divisors (see below), whose sum is σ = 364681861884. Its totient is φ = 121560620626.

The previous prime is 243121241221. The next prime is 243121241269. The reversal of 243121241254 is 452142121342.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60780310312 + ... + 60780310315.

It is an arithmetic number, because the mean of its divisors is an integer number (91170465471).

Almost surely, 2^243121241254 is an apocalyptic number.

243121241254 is a deficient number, since it is larger than the sum of its proper divisors (121560620630).

243121241254 is a wasteful number, since it uses less digits than its factorization.

243121241254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121560620629.

The product of its digits is 15360, while the sum is 31.

Adding to 243121241254 its reverse (452142121342), we get a palindrome (695263362596).

The spelling of 243121241254 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-one thousand, two hundred fifty-four".