8219142 has 24 divisors (see below), whose sum is σ = 18583344. Its totient is φ = 2620464.

The previous prime is 8219137. The next prime is 8219171. The reversal of 8219142 is 2419128.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9513 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (774306).

Almost surely, 2^8219142 is an apocalyptic number.

8219142 is an abundant number, since it is smaller than the sum of its proper divisors (10364202).

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

8219142 is a wasteful number, since it uses less digits than its factorization.

8219142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19884 (or 19881 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 8219142 is about 2866.9046025287. The cubic root of 8219142 is about 201.8097578218.

The spelling of 8219142 in words is "eight million, two hundred nineteen thousand, one hundred forty-two".