4020242404240 has 40 divisors (see below), whose sum is σ = 9439608792888. Its totient is φ = 1592175206400.

The previous prime is 4020242404237. The next prime is 4020242404247. The reversal of 4020242404240 is 424042420204.

It can be written as a sum of positive squares in 4 ways, for example, as 2559692809216 + 1460549595024 = 1599904^2 + 1208532^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 4020242404199 and 4020242404208.

It is not an unprimeable number, because it can be changed into a prime (4020242404247) 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, 248769297 + ... + 248785456.

Almost surely, 2^{4020242404240} is an apocalyptic number.

4020242404240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020242404240 is an abundant number, since it is smaller than the sum of its proper divisors (5419366388648).

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

4020242404240 is a wasteful number, since it uses less digits than its factorization.

4020242404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497554867 (or 497554861 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 4020242404240 its reverse (424042420204), we get a palindrome (4444284824444).

The spelling of 4020242404240 in words is "four trillion, twenty billion, two hundred forty-two million, four hundred four thousand, two hundred forty".