4040240240 has 20 divisors (see below), whose sum is σ = 9393558744. Its totient is φ = 1616096064.

The previous prime is 4040240227. The next prime is 4040240249. The reversal of 4040240240 is 420420404.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040240249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25251422 + ... + 25251581.

Almost surely, 2^4040240240 is an apocalyptic number.

4040240240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040240240 is an abundant number, since it is smaller than the sum of its proper divisors (5353318504).

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

4040240240 is a wasteful number, since it uses less digits than its factorization.

4040240240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50503016 (or 50503010 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4040240240 is about 63562.8841384656. The cubic root of 4040240240 is about 1592.7064173860.

Adding to 4040240240 its reverse (420420404), we get a palindrome (4460660644).

The spelling of 4040240240 in words is "four billion, forty million, two hundred forty thousand, two hundred forty".