184065421 has 4 divisors (see below), whose sum is σ = 184376412. Its totient is φ = 183754432.

The previous prime is 184065419. The next prime is 184065457. The reversal of 184065421 is 124560481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150552900 + 33512521 = 12270^2 + 5789^2 .

It is a cyclic number.

It is not a de Polignac number, because 184065421 - 2¹ = 184065419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (184005421) 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, 154606 + ... + 155791.

It is an arithmetic number, because the mean of its divisors is an integer number (46094103).

Almost surely, 2^184065421 is an apocalyptic number.

It is an amenable number.

184065421 is a deficient number, since it is larger than the sum of its proper divisors (310991).

184065421 is an equidigital number, since it uses as much as digits as its factorization.

184065421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310990.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 184065421 is about 13567.0712019949. The cubic root of 184065421 is about 568.8407969037.

The spelling of 184065421 in words is "one hundred eighty-four million, sixty-five thousand, four hundred twenty-one".