8142909 has 4 divisors (see below), whose sum is σ = 10857216. Its totient is φ = 5428604.

The previous prime is 8142907. The next prime is 8142917. The reversal of 8142909 is 9092418.

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.

It is a cyclic number.

It is not a de Polignac number, because 8142909 - 2¹ = 8142907 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8142909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142907) 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, 1357149 + ... + 1357154.

It is an arithmetic number, because the mean of its divisors is an integer number (2714304).

Almost surely, 2^8142909 is an apocalyptic number.

It is an amenable number.

8142909 is a deficient number, since it is larger than the sum of its proper divisors (2714307).

8142909 is a wasteful number, since it uses less digits than its factorization.

8142909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714306.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 8142909 is about 2853.5782799846. The cubic root of 8142909 is about 201.1838865686.

The spelling of 8142909 in words is "eight million, one hundred forty-two thousand, nine hundred nine".