178842 has 16 divisors (see below), whose sum is σ = 366912. Its totient is φ = 58080.

The previous prime is 178831. The next prime is 178853. The reversal of 178842 is 248871.

It is an interprime number because it is at equal distance from previous prime (178831) and next prime (178853).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 178842.

It is an unprimeable number.

178842 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, 118 + ... + 609.

It is an arithmetic number, because the mean of its divisors is an integer number (22932).

2¹⁷⁸⁸⁴² is an apocalyptic number.

178842 is an abundant number, since it is smaller than the sum of its proper divisors (188070).

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

178842 is a wasteful number, since it uses less digits than its factorization.

178842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773.

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

The square root of 178842 is about 422.8971506170. The cubic root of 178842 is about 56.3408211825.

It can be divided in two parts, 1788 and 42, that added together give a triangular number (1830 = T₆₀).

The spelling of 178842 in words is "one hundred seventy-eight thousand, eight hundred forty-two".