306402043 has 2 divisors, whose sum is σ = 306402044. Its totient is φ = 306402042.

The previous prime is 306402013. The next prime is 306402059. The reversal of 306402043 is 340204603.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 306402043 - 2⁵ = 306402011 is a prime.

It is not a weakly prime, because it can be changed into another prime (306402013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153201021 + 153201022.

It is an arithmetic number, because the mean of its divisors is an integer number (153201022).

Almost surely, 2^306402043 is an apocalyptic number.

306402043 is a deficient number, since it is larger than the sum of its proper divisors (1).

306402043 is an equidigital number, since it uses as much as digits as its factorization.

306402043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 306402043 is about 17504.3435466744. The cubic root of 306402043 is about 674.1614043151.

Adding to 306402043 its reverse (340204603), we get a palindrome (646606646).

The spelling of 306402043 in words is "three hundred six million, four hundred two thousand, forty-three".