420734089 has 2 divisors, whose sum is σ = 420734090. Its totient is φ = 420734088.

The previous prime is 420734063. The next prime is 420734123. The reversal of 420734089 is 980437024.

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., 420578064 + 156025 = 20508^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 420734089 - 2⁵ = 420734057 is a prime.

It is not a weakly prime, because it can be changed into another prime (420734029) 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 as a sum of consecutive naturals, namely, 210367044 + 210367045.

It is an arithmetic number, because the mean of its divisors is an integer number (210367045).

Almost surely, 2^420734089 is an apocalyptic number.

It is an amenable number.

420734089 is a deficient number, since it is larger than the sum of its proper divisors (1).

420734089 is an equidigital number, since it uses as much as digits as its factorization.

420734089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 420734089 is about 20511.8036505813. The cubic root of 420734089 is about 749.3232942019.

The spelling of 420734089 in words is "four hundred twenty million, seven hundred thirty-four thousand, eighty-nine".