306189141421 has 2 divisors, whose sum is σ = 306189141422. Its totient is φ = 306189141420.

The previous prime is 306189141413. The next prime is 306189141451. The reversal of 306189141421 is 124141981603.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261049464900 + 45139676521 = 510930^2 + 212461^2 .

It is a cyclic number.

It is not a de Polignac number, because 306189141421 - 2³ = 306189141413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306189141451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153094570710 + 153094570711.

It is an arithmetic number, because the mean of its divisors is an integer number (153094570711).

Almost surely, 2^306189141421 is an apocalyptic number.

It is an amenable number.

306189141421 is a deficient number, since it is larger than the sum of its proper divisors (1).

306189141421 is an equidigital number, since it uses as much as digits as its factorization.

306189141421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 306189141421 in words is "three hundred six billion, one hundred eighty-nine million, one hundred forty-one thousand, four hundred twenty-one".