240420 has 24 divisors (see below), whose sum is σ = 673344. Its totient is φ = 64096.

The previous prime is 240379. The next prime is 240421. The reversal of 240420 is 24042.

240420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 240396 and 240405.

It is not an unprimeable number, because it can be changed into a prime (240421) by changing a digit.

240420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (28056).

2²⁴⁰⁴²⁰ is an apocalyptic number.

240420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240420 is an abundant number, since it is smaller than the sum of its proper divisors (432924).

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

240420 is a wasteful number, since it uses less digits than its factorization.

240420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019 (or 4017 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 240420 is about 490.3264218865. The cubic root of 240420 is about 62.1808800391.

Adding to 240420 its reverse (24042), we get a palindrome (264462).

The spelling of 240420 in words is "two hundred forty thousand, four hundred twenty", and thus it is an iban number.