243530120 has 32 divisors (see below), whose sum is σ = 552268800. Its totient is φ = 96643008.

The previous prime is 243530101. The next prime is 243530137. The reversal of 243530120 is 21035342.

It is a happy number.

243530120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×243530120³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 243530092 and 243530101.

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, 18890 + ... + 29049.

It is an arithmetic number, because the mean of its divisors is an integer number (17258400).

Almost surely, 2^243530120 is an apocalyptic number.

243530120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243530120 is an abundant number, since it is smaller than the sum of its proper divisors (308738680).

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

243530120 is a wasteful number, since it uses less digits than its factorization.

243530120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48077 (or 48073 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 243530120 is about 15605.4516115363. The cubic root of 243530120 is about 624.4786008830.

Adding to 243530120 its reverse (21035342), we get a palindrome (264565462).

The spelling of 243530120 in words is "two hundred forty-three million, five hundred thirty thousand, one hundred twenty".