120440424 has 64 divisors (see below), whose sum is σ = 328890240. Its totient is φ = 36529920.

The previous prime is 120440381. The next prime is 120440429. The reversal of 120440424 is 424044021.

It is a self number, because there is not a number n which added to its sum of digits gives 120440424.

It is not an unprimeable number, because it can be changed into a prime (120440429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19434 + ... + 24870.

It is an arithmetic number, because the mean of its divisors is an integer number (5138910).

Almost surely, 2^120440424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120440424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164445120).

120440424 is an abundant number, since it is smaller than the sum of its proper divisors (208449816).

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

120440424 is a wasteful number, since it uses less digits than its factorization.

120440424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530 (or 5526 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 120440424 is about 10974.5352521189. The cubic root of 120440424 is about 493.8451108984.

Adding to 120440424 its reverse (424044021), we get a palindrome (544484445).

The spelling of 120440424 in words is "one hundred twenty million, four hundred forty thousand, four hundred twenty-four".