243121254434 has 8 divisors (see below), whose sum is σ = 366288410448. Its totient is φ = 121025117620.

The previous prime is 243121254421. The next prime is 243121254449. The reversal of 243121254434 is 434452121342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 243121254394 and 243121254403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267754232 + ... + 267755139.

It is an arithmetic number, because the mean of its divisors is an integer number (45786051306).

Almost surely, 2^243121254434 is an apocalyptic number.

243121254434 is a deficient number, since it is larger than the sum of its proper divisors (123167156014).

243121254434 is a wasteful number, since it uses less digits than its factorization.

243121254434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535509600.

The product of its digits is 92160, while the sum is 35.

Adding to 243121254434 its reverse (434452121342), we get a palindrome (677573375776).

The spelling of 243121254434 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred fifty-four thousand, four hundred thirty-four".