124420 has 12 divisors (see below), whose sum is σ = 261324. Its totient is φ = 49760.

The previous prime is 124367. The next prime is 124427. The reversal of 124420 is 24421.

It can be written as a sum of positive squares in 2 ways, for example, as 20736 + 103684 = 144^2 + 322^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 124420.

It is not an unprimeable number, because it can be changed into a prime (124427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3091 + ... + 3130.

It is an arithmetic number, because the mean of its divisors is an integer number (21777).

2¹²⁴⁴²⁰ is an apocalyptic number.

124420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124420 is an abundant number, since it is smaller than the sum of its proper divisors (136904).

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

124420 is a wasteful number, since it uses less digits than its factorization.

124420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6230 (or 6228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 124420 is about 352.7321930303. The cubic root of 124420 is about 49.9225467485.

Adding to 124420 its reverse (24421), we get a palindrome (148841).

Subtracting from 124420 its reverse (24421), we obtain a palindrome (99999).

The spelling of 124420 in words is "one hundred twenty-four thousand, four hundred twenty", and thus it is an iban number.