8100642 has 32 divisors (see below), whose sum is σ = 17821440. Its totient is φ = 2434320.

The previous prime is 8100637. The next prime is 8100643. The reversal of 8100642 is 2460018.

It is not an unprimeable number, because it can be changed into a prime (8100643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8733 + ... + 9615.

It is an arithmetic number, because the mean of its divisors is an integer number (556920).

Almost surely, 2^8100642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8100642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8910720).

8100642 is an abundant number, since it is smaller than the sum of its proper divisors (9720798).

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

8100642 is a wasteful number, since it uses less digits than its factorization.

8100642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 8100642 is about 2846.1626798200. The cubic root of 8100642 is about 200.8351907605.

The spelling of 8100642 in words is "eight million, one hundred thousand, six hundred forty-two".