8147121 has 8 divisors (see below), whose sum is σ = 11094144. Its totient is φ = 5315760.

The previous prime is 8147101. The next prime is 8147123. The reversal of 8147121 is 1217418.

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

It is not a de Polignac number, because 8147121 - 2⁹ = 8146609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8147091 and 8147100.

It is not an unprimeable number, because it can be changed into a prime (8147123) 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 7 ways as a sum of consecutive naturals, for example, 28750 + ... + 29031.

It is an arithmetic number, because the mean of its divisors is an integer number (1386768).

Almost surely, 2^8147121 is an apocalyptic number.

It is an amenable number.

8147121 is a deficient number, since it is larger than the sum of its proper divisors (2947023).

8147121 is a wasteful number, since it uses less digits than its factorization.

8147121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57831.

The product of its digits is 448, while the sum is 24.

The square root of 8147121 is about 2854.3162053283. The cubic root of 8147121 is about 201.2185687060.

The spelling of 8147121 in words is "eight million, one hundred forty-seven thousand, one hundred twenty-one".