8210442 has 16 divisors (see below), whose sum is σ = 16731360. Its totient is φ = 2685072.

The previous prime is 8210441. The next prime is 8210453. The reversal of 8210442 is 2440128.

It is a super-2 number, since 2×8210442² = 134822715670728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8210441) 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, 12592 + ... + 13227.

It is an arithmetic number, because the mean of its divisors is an integer number (1045710).

Almost surely, 2^8210442 is an apocalyptic number.

8210442 is an abundant number, since it is smaller than the sum of its proper divisors (8520918).

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

8210442 is a wasteful number, since it uses less digits than its factorization.

8210442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25877.

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

The square root of 8210442 is about 2865.3868848726. The cubic root of 8210442 is about 201.7385271611.

The spelling of 8210442 in words is "eight million, two hundred ten thousand, four hundred forty-two".