243130120 has 16 divisors (see below), whose sum is σ = 547042860. Its totient is φ = 97252032.

The previous prime is 243130109. The next prime is 243130169. The reversal of 243130120 is 21031342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 242549476 + 580644 = 15574^2 + 762^2 .

It is a super-2 number, since 2×243130120² = 118224510502428800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243130094 and 243130103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3039087 + ... + 3039166.

Almost surely, 2^243130120 is an apocalyptic number.

243130120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243130120 is an abundant number, since it is smaller than the sum of its proper divisors (303912740).

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

243130120 is a wasteful number, since it uses less digits than its factorization.

243130120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6078264 (or 6078260 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 243130120 is about 15592.6303105025. The cubic root of 243130120 is about 624.1365099653.

Adding to 243130120 its reverse (21031342), we get a palindrome (264161462).

The spelling of 243130120 in words is "two hundred forty-three million, one hundred thirty thousand, one hundred twenty".