243010342121 has 4 divisors (see below), whose sum is σ = 243015245700. Its totient is φ = 243005438544.

The previous prime is 243010342109. The next prime is 243010342243. The reversal of 243010342121 is 121243010342.

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

It can be written as a sum of positive squares in 2 ways, for example, as 115821105625 + 127189236496 = 340325^2 + 356636^2 .

It is a cyclic number.

It is not a de Polignac number, because 243010342121 - 2¹⁰ = 243010341097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243010342621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2376686 + ... + 2476823.

It is an arithmetic number, because the mean of its divisors is an integer number (60753811425).

Almost surely, 2^243010342121 is an apocalyptic number.

It is an amenable number.

243010342121 is a deficient number, since it is larger than the sum of its proper divisors (4903579).

243010342121 is an equidigital number, since it uses as much as digits as its factorization.

243010342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903578.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 243010342121 its reverse (121243010342), we get a palindrome (364253352463).

The spelling of 243010342121 in words is "two hundred forty-three billion, ten million, three hundred forty-two thousand, one hundred twenty-one".