306000421 has 4 divisors (see below), whose sum is σ = 306074412. Its totient is φ = 305926432.

The previous prime is 306000413. The next prime is 306000433. The reversal of 306000421 is 124000603.

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 78322500 + 227677921 = 8850^2 + 15089^2 .

It is a cyclic number.

It is not a de Polignac number, because 306000421 - 2³ = 306000413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 306000395 and 306000404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306004421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30400 + ... + 39193.

It is an arithmetic number, because the mean of its divisors is an integer number (76518603).

Almost surely, 2^306000421 is an apocalyptic number.

It is an amenable number.

306000421 is a deficient number, since it is larger than the sum of its proper divisors (73991).

306000421 is an equidigital number, since it uses as much as digits as its factorization.

306000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73990.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 306000421 is about 17492.8677180158. The cubic root of 306000421 is about 673.8667191193.

The spelling of 306000421 in words is "three hundred six million, four hundred twenty-one", and thus it is an aban number.