8020442 has 4 divisors (see below), whose sum is σ = 12030666. Its totient is φ = 4010220.

The previous prime is 8020433. The next prime is 8020457. The reversal of 8020442 is 2440208.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5527201 + 2493241 = 2351^2 + 1579^2 .

It is a nialpdrome in base 15.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2005109 + ... + 2005112.

Almost surely, 2^8020442 is an apocalyptic number.

8020442 is a deficient number, since it is larger than the sum of its proper divisors (4010224).

8020442 is a wasteful number, since it uses less digits than its factorization.

8020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010223.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 8020442 is about 2832.0384884390. The cubic root of 8020442 is about 200.1702051100.

The spelling of 8020442 in words is "eight million, twenty thousand, four hundred forty-two".