842145 has 16 divisors (see below), whose sum is σ = 1406592. Its totient is φ = 429440.

The previous prime is 842141. The next prime is 842147. The reversal of 842145 is 541248.

842145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 842145 - 2² = 842141 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (842141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (87912).

2⁸⁴²¹⁴⁵ is an apocalyptic number.

It is an amenable number.

842145 is a deficient number, since it is larger than the sum of its proper divisors (564447).

842145 is a wasteful number, since it uses less digits than its factorization.

842145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472.

The product of its digits is 1280, while the sum is 24.

The square root of 842145 is about 917.6845863367. The cubic root of 842145 is about 94.4341244651.

The spelling of 842145 in words is "eight hundred forty-two thousand, one hundred forty-five".