842770 has 16 divisors (see below), whose sum is σ = 1539648. Its totient is φ = 332080.

The previous prime is 842767. The next prime is 842771. The reversal of 842770 is 77248.

It is a super-2 number, since 2×842770² = 1420522545800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (842771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (96228).

2⁸⁴²⁷⁷⁰ is an apocalyptic number.

842770 is a deficient number, since it is larger than the sum of its proper divisors (696878).

842770 is a wasteful number, since it uses less digits than its factorization.

842770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 842770 is about 918.0250541243. The cubic root of 842770 is about 94.4574801948.

It can be divided in two parts, 8 and 42770, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 842770 in words is "eight hundred forty-two thousand, seven hundred seventy".