1420320017 has 4 divisors (see below), whose sum is σ = 1420398960. Its totient is φ = 1420241076.

The previous prime is 1420319981. The next prime is 1420320019. The reversal of 1420320017 is 7100230241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7100230241 = 13 ⋅546171557.

It is a cyclic number.

It is not a de Polignac number, because 1420320017 - 2¹² = 1420315921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420320019) 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 3 ways as a sum of consecutive naturals, for example, 2138 + ... + 53340.

It is an arithmetic number, because the mean of its divisors is an integer number (355099740).

Almost surely, 2^1420320017 is an apocalyptic number.

It is an amenable number.

1420320017 is a deficient number, since it is larger than the sum of its proper divisors (78943).

1420320017 is an equidigital number, since it uses as much as digits as its factorization.

1420320017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78942.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1420320017 is about 37687.1333083322. The cubic root of 1420320017 is about 1124.0752939962.

Adding to 1420320017 its reverse (7100230241), we get a palindrome (8520550258).

The spelling of 1420320017 in words is "one billion, four hundred twenty million, three hundred twenty thousand, seventeen".