84142 has 4 divisors (see below), whose sum is σ = 126216. Its totient is φ = 42070.

The previous prime is 84137. The next prime is 84143. The reversal of 84142 is 24148.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21034 + ... + 21037.

It is an arithmetic number, because the mean of its divisors is an integer number (31554).

2⁸⁴¹⁴² is an apocalyptic number.

84142 is a deficient number, since it is larger than the sum of its proper divisors (42074).

84142 is a wasteful number, since it uses less digits than its factorization.

84142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42073.

The product of its digits is 256, while the sum is 19.

The square root of 84142 is about 290.0724047544. The cubic root of 84142 is about 43.8198557487.

The spelling of 84142 in words is "eighty-four thousand, one hundred forty-two".