842142 has 16 divisors (see below), whose sum is σ = 1924992. Its totient is φ = 240600.

The previous prime is 842141. The next prime is 842147. The reversal of 842142 is 241248.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 9984 + ... + 10067.

It is an arithmetic number, because the mean of its divisors is an integer number (120312).

2⁸⁴²¹⁴² is an apocalyptic number.

842142 is an abundant number, since it is smaller than the sum of its proper divisors (1082850).

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

842142 is a wasteful number, since it uses less digits than its factorization.

842142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20063.

The product of its digits is 512, while the sum is 21.

The square root of 842142 is about 917.6829517867. The cubic root of 842142 is about 94.4340123297.

The spelling of 842142 in words is "eight hundred forty-two thousand, one hundred forty-two".