861342 has 16 divisors (see below), whose sum is σ = 1743120. Its totient is φ = 283712.

The previous prime is 861317. The next prime is 861347. The reversal of 861342 is 243168.

It is a happy number.

861342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861347) by changing a digit.

861342 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, 273 + ... + 1340.

It is an arithmetic number, because the mean of its divisors is an integer number (108945).

2⁸⁶¹³⁴² is an apocalyptic number.

861342 is an abundant number, since it is smaller than the sum of its proper divisors (881778).

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

861342 is a wasteful number, since it uses less digits than its factorization.

861342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707.

The product of its digits is 1152, while the sum is 24.

The square root of 861342 is about 928.0851254061. The cubic root of 861342 is about 95.1462935312.

The spelling of 861342 in words is "eight hundred sixty-one thousand, three hundred forty-two".