8218142 has 4 divisors (see below), whose sum is σ = 12327216. Its totient is φ = 4109070.

The previous prime is 8218141. The next prime is 8218187. The reversal of 8218142 is 2418128.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2054534 + ... + 2054537.

It is an arithmetic number, because the mean of its divisors is an integer number (3081804).

Almost surely, 2^8218142 is an apocalyptic number.

8218142 is a deficient number, since it is larger than the sum of its proper divisors (4109074).

8218142 is a wasteful number, since it uses less digits than its factorization.

8218142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109073.

The product of its digits is 1024, while the sum is 26.

The square root of 8218142 is about 2866.7301930946. The cubic root of 8218142 is about 201.8015729471.

The spelling of 8218142 in words is "eight million, two hundred eighteen thousand, one hundred forty-two".