1421043089 has 2 divisors, whose sum is σ = 1421043090. Its totient is φ = 1421043088.

The previous prime is 1421043047. The next prime is 1421043179. The reversal of 1421043089 is 9803401241.

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., 1368408064 + 52635025 = 36992^2 + 7255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421043089 - 2¹⁶ = 1420977553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1421043989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710521544 + 710521545.

It is an arithmetic number, because the mean of its divisors is an integer number (710521545).

Almost surely, 2^1421043089 is an apocalyptic number.

It is an amenable number.

1421043089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421043089 is an equidigital number, since it uses as much as digits as its factorization.

1421043089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1421043089 is about 37696.7251760680. The cubic root of 1421043089 is about 1124.2660138041.

The spelling of 1421043089 in words is "one billion, four hundred twenty-one million, forty-three thousand, eighty-nine".