5120400240 has 60 divisors (see below), whose sum is σ = 17196013224. Its totient is φ = 1365439872.

The previous prime is 5120400217. The next prime is 5120400253. The reversal of 5120400240 is 420040215.

5120400240 is a `hidden beast` number, since 5 + 1 + 20 + 400 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3555114 + ... + 3556553.

Almost surely, 2^5120400240 is an apocalyptic number.

It is an amenable number.

5120400240 is an abundant number, since it is smaller than the sum of its proper divisors (12075612984).

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

5120400240 is a wasteful number, since it uses less digits than its factorization.

5120400240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7111686 (or 7111677 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 5120400240 is about 71556.9719873612. The cubic root of 5120400240 is about 1723.5926618418.

Adding to 5120400240 its reverse (420040215), we get a palindrome (5540440455).

The spelling of 5120400240 in words is "five billion, one hundred twenty million, four hundred thousand, two hundred forty".