4120640 has 56 divisors (see below), whose sum is σ = 9997440. Its totient is φ = 1617408.

The previous prime is 4120621. The next prime is 4120651. The reversal of 4120640 is 460214.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25199 + ... + 25361.

Almost surely, 2^4120640 is an apocalyptic number.

4120640 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 4120640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4998720).

4120640 is an abundant number, since it is smaller than the sum of its proper divisors (5876800).

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

4120640 is a wasteful number, since it uses less digits than its factorization.

4120640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4120640 is about 2029.9359595810. The cubic root of 4120640 is about 160.3201921371.

Adding to 4120640 its reverse (460214), we get a palindrome (4580854).

The spelling of 4120640 in words is "four million, one hundred twenty thousand, six hundred forty".