40042044040420 has 24 divisors (see below), whose sum is σ = 87744305202624. Its totient is φ = 15320434241376.

The previous prime is 40042044040417. The next prime is 40042044040441. The reversal of 40042044040420 is 2404044024004.

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, 43523960454 + ... + 43523961373.

It is an arithmetic number, because the mean of its divisors is an integer number (3656012716776).

Almost surely, 2^{40042044040420} is an apocalyptic number.

It is an amenable number.

40042044040420 is an abundant number, since it is smaller than the sum of its proper divisors (47702261162204).

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

40042044040420 is a wasteful number, since it uses less digits than its factorization.

40042044040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87047921859 (or 87047921857 counting only the distinct ones).

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

Adding to 40042044040420 its reverse (2404044024004), we get a palindrome (42446088064424).

The spelling of 40042044040420 in words is "forty trillion, forty-two billion, forty-four million, forty thousand, four hundred twenty".