120243240 has 96 divisors (see below), whose sum is σ = 420867720. Its totient is φ = 29597184.

The previous prime is 120243223. The next prime is 120243247. The reversal of 120243240 is 42342021.

It can be written as a sum of positive squares in 4 ways, for example, as 98843364 + 21399876 = 9942^2 + 4626^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (120243247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8167 + ... + 17526.

Almost surely, 2^120243240 is an apocalyptic number.

120243240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120243240 is an abundant number, since it is smaller than the sum of its proper divisors (300624480).

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

120243240 is a wasteful number, since it uses less digits than its factorization.

120243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25723 (or 25716 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 120243240 is about 10965.5478659299. The cubic root of 120243240 is about 493.5754573999.

Adding to 120243240 its reverse (42342021), we get a palindrome (162585261).

The spelling of 120243240 in words is "one hundred twenty million, two hundred forty-three thousand, two hundred forty".