8742073 has 4 divisors (see below), whose sum is σ = 8749440. Its totient is φ = 8734708.

The previous prime is 8742067. The next prime is 8742077. The reversal of 8742073 is 3702478.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8742073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8742077) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1453 + ... + 4426.

It is an arithmetic number, because the mean of its divisors is an integer number (2187360).

Almost surely, 2^8742073 is an apocalyptic number.

It is an amenable number.

8742073 is a deficient number, since it is larger than the sum of its proper divisors (7367).

8742073 is a wasteful number, since it uses less digits than its factorization.

8742073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7366.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 8742073 is about 2956.6996803869. The cubic root of 8742073 is about 206.0020187065.

The spelling of 8742073 in words is "eight million, seven hundred forty-two thousand, seventy-three".