8142073 has 4 divisors (see below), whose sum is σ = 8162980. Its totient is φ = 8121168.

The previous prime is 8142049. The next prime is 8142077. The reversal of 8142073 is 3702418.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3489424 + 4652649 = 1868^2 + 2157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8142073 is a prime.

It is a Duffinian number.

8142073 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8142077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9858 + ... + 10651.

It is an arithmetic number, because the mean of its divisors is an integer number (2040745).

Almost surely, 2^8142073 is an apocalyptic number.

It is an amenable number.

8142073 is a deficient number, since it is larger than the sum of its proper divisors (20907).

8142073 is a wasteful number, since it uses less digits than its factorization.

8142073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20906.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 8142073 is about 2853.4317934726. The cubic root of 8142073 is about 201.1770014172.

The spelling of 8142073 in words is "eight million, one hundred forty-two thousand, seventy-three".