42020402440 has 32 divisors (see below), whose sum is σ = 95125956480. Its totient is φ = 16705040832.

The previous prime is 42020402419. The next prime is 42020402467. The reversal of 42020402440 is 4420402024.

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, 3215904 + ... + 3228943.

It is an arithmetic number, because the mean of its divisors is an integer number (2972686140).

Almost surely, 2^42020402440 is an apocalyptic number.

42020402440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42020402440 is an abundant number, since it is smaller than the sum of its proper divisors (53105554040).

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

42020402440 is a wasteful number, since it uses less digits than its factorization.

42020402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6445021 (or 6445017 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 42020402440 its reverse (4420402024), we get a palindrome (46440804464).

The spelling of 42020402440 in words is "forty-two billion, twenty million, four hundred two thousand, four hundred forty".