1420202089 has 2 divisors, whose sum is σ = 1420202090. Its totient is φ = 1420202088.

The previous prime is 1420202087. The next prime is 1420202141. The reversal of 1420202089 is 9802020241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1420008489 + 193600 = 37683^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420202089 - 2¹ = 1420202087 is a prime.

Together with 1420202087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1420202087) 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, 710101044 + 710101045.

It is an arithmetic number, because the mean of its divisors is an integer number (710101045).

Almost surely, 2^1420202089 is an apocalyptic number.

It is an amenable number.

1420202089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420202089 is an equidigital number, since it uses as much as digits as its factorization.

1420202089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1420202089 is about 37685.5687100513. The cubic root of 1420202089 is about 1124.0441827868.

The spelling of 1420202089 in words is "one billion, four hundred twenty million, two hundred two thousand, eighty-nine".