4020242042440 has 64 divisors (see below), whose sum is σ = 10164892953600. Its totient is φ = 1419858054912.

The previous prime is 4020242042437. The next prime is 4020242042447. The reversal of 4020242042440 is 442402420204.

It is a super-2 number, since 2×4020242042440² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4020242042399 and 4020242042408.

It is not an unprimeable number, because it can be changed into a prime (4020242042447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168058360 + ... + 168082279.

It is an arithmetic number, because the mean of its divisors is an integer number (158826452400).

Almost surely, 2^{4020242042440} is an apocalyptic number.

4020242042440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020242042440 is an abundant number, since it is smaller than the sum of its proper divisors (6144650911160).

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

4020242042440 is a wasteful number, since it uses less digits than its factorization.

4020242042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336140686 (or 336140682 counting only the distinct ones).

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

Adding to 4020242042440 its reverse (442402420204), we get a palindrome (4462644462644).

The spelling of 4020242042440 in words is "four trillion, twenty billion, two hundred forty-two million, forty-two thousand, four hundred forty".