243792121 has 8 divisors (see below), whose sum is σ = 260167680. Its totient is φ = 227642688.

The previous prime is 243792113. The next prime is 243792127. The reversal of 243792121 is 121297342.

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

It is a cyclic number.

It is not a de Polignac number, because 243792121 - 2³ = 243792113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243792127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54301 + ... + 58618.

It is an arithmetic number, because the mean of its divisors is an integer number (32520960).

Almost surely, 2^243792121 is an apocalyptic number.

It is an amenable number.

243792121 is a deficient number, since it is larger than the sum of its proper divisors (16375559).

243792121 is a wasteful number, since it uses less digits than its factorization.

243792121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113063.

The product of its digits is 6048, while the sum is 31.

The square root of 243792121 is about 15613.8438893182. The cubic root of 243792121 is about 624.7024683023.

The spelling of 243792121 in words is "two hundred forty-three million, seven hundred ninety-two thousand, one hundred twenty-one".