42842257920 has 1920 divisors, whose sum is σ = 205906821120. Its totient is φ = 7962624000.

The previous prime is 42842257919. The next prime is 42842257933. The reversal of 42842257920 is 2975224824.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 1044933100 + ... + 1044933140.

It is an arithmetic number, because the mean of its divisors is an integer number (107243136).

Almost surely, 2^42842257920 is an apocalyptic number.

42842257920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42842257920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102953410560).

42842257920 is an abundant number, since it is smaller than the sum of its proper divisors (163064563200).

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

42842257920 is a wasteful number, since it uses less digits than its factorization.

42842257920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 42842257920 in words is "forty-two billion, eight hundred forty-two million, two hundred fifty-seven thousand, nine hundred twenty".