8138121 has 8 divisors (see below), whose sum is σ = 11489184. Its totient is φ = 5106240.

The previous prime is 8138111. The next prime is 8138129. The reversal of 8138121 is 1218318.

8138121 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8138121 - 2⁹ = 8137609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8138091 and 8138100.

It is not an unprimeable number, because it can be changed into a prime (8138129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79735 + ... + 79836.

It is an arithmetic number, because the mean of its divisors is an integer number (1436148).

Almost surely, 2^8138121 is an apocalyptic number.

It is an amenable number.

8138121 is a deficient number, since it is larger than the sum of its proper divisors (3351063).

8138121 is a wasteful number, since it uses less digits than its factorization.

8138121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159591.

The product of its digits is 384, while the sum is 24.

The square root of 8138121 is about 2852.7392099524. The cubic root of 8138121 is about 201.1444470469.

The spelling of 8138121 in words is "eight million, one hundred thirty-eight thousand, one hundred twenty-one".