4120840 has 32 divisors (see below), whose sum is σ = 9408960. Its totient is φ = 1624000.

The previous prime is 4120829. The next prime is 4120847. The reversal of 4120840 is 480214.

It is not an unprimeable number, because it can be changed into a prime (4120847) 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, 2115 + ... + 3565.

It is an arithmetic number, because the mean of its divisors is an integer number (294030).

Almost surely, 2^4120840 is an apocalyptic number.

4120840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4120840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4704480).

4120840 is an abundant number, since it is smaller than the sum of its proper divisors (5288120).

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

4120840 is a wasteful number, since it uses less digits than its factorization.

4120840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4120840 is about 2029.9852216211. The cubic root of 4120840 is about 160.3227858701.

The spelling of 4120840 in words is "four million, one hundred twenty thousand, eight hundred forty".