8121145 has 8 divisors (see below), whose sum is σ = 9765504. Its totient is φ = 6483504.

The previous prime is 8121119. The next prime is 8121199. The reversal of 8121145 is 5411218.

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 8121145 - 2¹⁹ = 7596857 is a prime.

It is a super-2 number, since 2×8121145² = 131905992222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552 + ... + 4318.

It is an arithmetic number, because the mean of its divisors is an integer number (1220688).

Almost surely, 2^8121145 is an apocalyptic number.

It is an amenable number.

8121145 is a deficient number, since it is larger than the sum of its proper divisors (1644359).

8121145 is a wasteful number, since it uses less digits than its factorization.

8121145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359.

The product of its digits is 320, while the sum is 22.

The square root of 8121145 is about 2849.7622707868. The cubic root of 8121145 is about 201.0044882375.

The spelling of 8121145 in words is "eight million, one hundred twenty-one thousand, one hundred forty-five".