8821142 has 12 divisors (see below), whose sum is σ = 14544348. Its totient is φ = 4009500.

The previous prime is 8821139. The next prime is 8821151. The reversal of 8821142 is 2411288.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17984 + ... + 18467.

It is an arithmetic number, because the mean of its divisors is an integer number (1212029).

Almost surely, 2^8821142 is an apocalyptic number.

8821142 is a deficient number, since it is larger than the sum of its proper divisors (5723206).

8821142 is a wasteful number, since it uses less digits than its factorization.

8821142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36475 (or 36464 counting only the distinct ones).

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

The square root of 8821142 is about 2970.0407404613. The cubic root of 8821142 is about 206.6212277256.

It can be divided in two parts, 88 and 21142, that multiplied together give a square (1860496 = 1364²).

The spelling of 8821142 in words is "eight million, eight hundred twenty-one thousand, one hundred forty-two".