8216142 has 24 divisors (see below), whose sum is σ = 18063528. Its totient is φ = 2489520.

The previous prime is 8216137. The next prime is 8216149. The reversal of 8216142 is 2416128.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4933 + ... + 6384.

It is an arithmetic number, because the mean of its divisors is an integer number (752647).

Almost surely, 2^8216142 is an apocalyptic number.

8216142 is an abundant number, since it is smaller than the sum of its proper divisors (9847386).

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

8216142 is a wasteful number, since it uses less digits than its factorization.

8216142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11344 (or 11333 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 8216142 is about 2866.3813423897. The cubic root of 8216142 is about 201.7852012055.

The spelling of 8216142 in words is "eight million, two hundred sixteen thousand, one hundred forty-two".