84365121 has 4 divisors (see below), whose sum is σ = 112486832. Its totient is φ = 56243412.

The previous prime is 84365117. The next prime is 84365123. The reversal of 84365121 is 12156348.

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 not a de Polignac number, because 84365121 - 2² = 84365117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84365123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14060851 + ... + 14060856.

It is an arithmetic number, because the mean of its divisors is an integer number (28121708).

Almost surely, 2^84365121 is an apocalyptic number.

It is an amenable number.

84365121 is a deficient number, since it is larger than the sum of its proper divisors (28121711).

84365121 is a wasteful number, since it uses less digits than its factorization.

84365121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28121710.

The product of its digits is 5760, while the sum is 30.

The square root of 84365121 is about 9185.0487750474. The cubic root of 84365121 is about 438.5855422142.

The spelling of 84365121 in words is "eighty-four million, three hundred sixty-five thousand, one hundred twenty-one".