8178121 has 8 divisors (see below), whose sum is σ = 9452160. Its totient is φ = 6930528.

The previous prime is 8178109. The next prime is 8178143. The reversal of 8178121 is 1218718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8178121 - 2¹³ = 8169929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8178121.

It is not an unprimeable number, because it can be changed into a prime (8178101) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 5941 + ... + 7186.

It is an arithmetic number, because the mean of its divisors is an integer number (1181520).

Almost surely, 2^8178121 is an apocalyptic number.

It is an amenable number.

8178121 is a deficient number, since it is larger than the sum of its proper divisors (1274039).

8178121 is a wasteful number, since it uses less digits than its factorization.

8178121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13223.

The product of its digits is 896, while the sum is 28.

The square root of 8178121 is about 2859.7414218772. The cubic root of 8178121 is about 201.4734595925.

The spelling of 8178121 in words is "eight million, one hundred seventy-eight thousand, one hundred twenty-one".