8020742 has 4 divisors (see below), whose sum is σ = 12031116. Its totient is φ = 4010370.

The previous prime is 8020709. The next prime is 8020751. The reversal of 8020742 is 2470208.

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

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 as a sum of consecutive naturals, namely, 2005184 + ... + 2005187.

It is an arithmetic number, because the mean of its divisors is an integer number (3007779).

Almost surely, 2^8020742 is an apocalyptic number.

8020742 is a deficient number, since it is larger than the sum of its proper divisors (4010374).

8020742 is a wasteful number, since it uses less digits than its factorization.

8020742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010373.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 8020742 is about 2832.0914533256. The cubic root of 8020742 is about 200.1727008292.

The spelling of 8020742 in words is "eight million, twenty thousand, seven hundred forty-two".