42505221871904 has 48 divisors (see below), whose sum is σ = 91290312640800. Its totient is φ = 19320409704960.

The previous prime is 42505221871859. The next prime is 42505221871907. The reversal of 42505221871904 is 40917812250524.

It is not an unprimeable number, because it can be changed into a prime (42505221871907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56340572 + ... + 57090020.

It is an arithmetic number, because the mean of its divisors is an integer number (1901881513350).

Almost surely, 2^{42505221871904} is an apocalyptic number.

42505221871904 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42505221871904 is an abundant number, since it is smaller than the sum of its proper divisors (48785090768896).

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

42505221871904 is a wasteful number, since it uses less digits than its factorization.

42505221871904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910593 (or 910585 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 42505221871904 in words is "forty-two trillion, five hundred five billion, two hundred twenty-one million, eight hundred seventy-one thousand, nine hundred four".