842550840 has 48 divisors (see below), whose sum is σ = 2738291400. Its totient is φ = 224680128.

The previous prime is 842550809. The next prime is 842550859. The reversal of 842550840 is 48055248.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 842550795 and 842550804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1169850 + ... + 1170569.

Almost surely, 2^842550840 is an apocalyptic number.

It is an amenable number.

842550840 is an abundant number, since it is smaller than the sum of its proper divisors (1895740560).

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

842550840 is a wasteful number, since it uses less digits than its factorization.

842550840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340436 (or 2340429 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 842550840 is about 29026.7263052519. The cubic root of 842550840 is about 944.4929168304.

The spelling of 842550840 in words is "eight hundred forty-two million, five hundred fifty thousand, eight hundred forty".