1420020343 has 8 divisors (see below), whose sum is σ = 1656000800. Its totient is φ = 1217160000.

The previous prime is 1420020341. The next prime is 1420020359. The reversal of 1420020343 is 3430200241.

It is not a de Polignac number, because 1420020343 - 2¹ = 1420020341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420020343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420020341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2069658 + ... + 2070343.

It is an arithmetic number, because the mean of its divisors is an integer number (207000100).

Almost surely, 2^1420020343 is an apocalyptic number.

1420020343 is a deficient number, since it is larger than the sum of its proper divisors (235980457).

1420020343 is an frugal number, since it uses more digits than its factorization.

1420020343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140022 (or 4140008 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1420020343 is about 37683.1572854505. The cubic root of 1420020343 is about 1123.9962320407.

Adding to 1420020343 its reverse (3430200241), we get a palindrome (4850220584).

It can be divided in two parts, 14200 and 20343, that added together give a palindrome (34543).

The spelling of 1420020343 in words is "one billion, four hundred twenty million, twenty thousand, three hundred forty-three".