1420530209 has 32 divisors (see below), whose sum is σ = 1738285056. Its totient is φ = 1134492480.

The previous prime is 1420530127. The next prime is 1420530227. The reversal of 1420530209 is 9020350241.

It is not a de Polignac number, because 1420530209 - 2¹⁶ = 1420464673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1420530289) 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 in 31 ways as a sum of consecutive naturals, for example, 2625479 + ... + 2626019.

It is an arithmetic number, because the mean of its divisors is an integer number (54321408).

Almost surely, 2^1420530209 is an apocalyptic number.

It is an amenable number.

1420530209 is a deficient number, since it is larger than the sum of its proper divisors (317754847).

1420530209 is a wasteful number, since it uses less digits than its factorization.

1420530209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1420530209 is about 37689.9218492159. The cubic root of 1420530209 is about 1124.1307415895.

The spelling of 1420530209 in words is "one billion, four hundred twenty million, five hundred thirty thousand, two hundred nine".