243121260 has 24 divisors (see below), whose sum is σ = 680739696. Its totient is φ = 64832320.

The previous prime is 243121259. The next prime is 243121279. The reversal of 243121260 is 62121342.

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, 2025951 + ... + 2026070.

It is an arithmetic number, because the mean of its divisors is an integer number (28364154).

Almost surely, 2^243121260 is an apocalyptic number.

243121260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243121260 is an abundant number, since it is smaller than the sum of its proper divisors (437618436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243121260 is a wasteful number, since it uses less digits than its factorization.

243121260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052033 (or 4052031 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 243121260 is about 15592.3461993377. The cubic root of 243121260 is about 624.1289284055.

The spelling of 243121260 in words is "two hundred forty-three million, one hundred twenty-one thousand, two hundred sixty".