878142 has 16 divisors (see below), whose sum is σ = 1848960. Its totient is φ = 277272.

The previous prime is 878131. The next prime is 878147. The reversal of 878142 is 241878.

It is a super-2 number, since 2×878142² = 1542266744328, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878142.

It is not an unprimeable number, because it can be changed into a prime (878147) by changing a digit.

878142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3738 + ... + 3965.

It is an arithmetic number, because the mean of its divisors is an integer number (115560).

2⁸⁷⁸¹⁴² is an apocalyptic number.

878142 is an abundant number, since it is smaller than the sum of its proper divisors (970818).

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

878142 is a wasteful number, since it uses less digits than its factorization.

878142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727.

The product of its digits is 3584, while the sum is 30.

The square root of 878142 is about 937.0923113546. The cubic root of 878142 is about 95.7609067557.

The spelling of 878142 in words is "eight hundred seventy-eight thousand, one hundred forty-two".