842107820 has 12 divisors (see below), whose sum is σ = 1768426464. Its totient is φ = 336843120.

The previous prime is 842107817. The next prime is 842107837. The reversal of 842107820 is 28701248.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21052676 + ... + 21052715.

It is an arithmetic number, because the mean of its divisors is an integer number (147368872).

Almost surely, 2^842107820 is an apocalyptic number.

It is an amenable number.

842107820 is an abundant number, since it is smaller than the sum of its proper divisors (926318644).

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

842107820 is a wasteful number, since it uses less digits than its factorization.

842107820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42105400 (or 42105398 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 842107820 is about 29019.0940589123. The cubic root of 842107820 is about 944.3273471534.

The spelling of 842107820 in words is "eight hundred forty-two million, one hundred seven thousand, eight hundred twenty".