42851020405842 has 80 divisors (see below), whose sum is σ = 105414117412032. Its totient is φ = 12902449603680.

The previous prime is 42851020405811. The next prime is 42851020405883. The reversal of 42851020405842 is 24850402015824.

It is a happy number.

42851020405842 is a `hidden beast` number, since 4 + 2 + 8 + 5 + 1 + 0 + 20 + 40 + 584 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76301718 + ... + 76861265.

Almost surely, 2^{42851020405842} is an apocalyptic number.

42851020405842 is an abundant number, since it is smaller than the sum of its proper divisors (62563097006190).

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

42851020405842 is a wasteful number, since it uses less digits than its factorization.

42851020405842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153163165 (or 153163156 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 45.

The spelling of 42851020405842 in words is "forty-two trillion, eight hundred fifty-one billion, twenty million, four hundred five thousand, eight hundred forty-two".