243120 has 40 divisors (see below), whose sum is σ = 754416. Its totient is φ = 64768.

The previous prime is 243119. The next prime is 243121. The reversal of 243120 is 21342.

It is an interprime number because it is at equal distance from previous prime (243119) and next prime (243121).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 243096 and 243105.

It is not an unprimeable number, because it can be changed into a prime (243121) 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, 267 + ... + 746.

2²⁴³¹²⁰ is an apocalyptic number.

243120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243120 is an abundant number, since it is smaller than the sum of its proper divisors (511296).

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

243120 is a wasteful number, since it uses less digits than its factorization.

243120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 243120 is about 493.0720028556. The cubic root of 243120 is about 62.4127850200.

Adding to 243120 its reverse (21342), we get a palindrome (264462).

It can be divided in two parts, 243 and 120, that added together give a palindrome (363).

The spelling of 243120 in words is "two hundred forty-three thousand, one hundred twenty", and thus it is an iban number.