1420340143 has 2 divisors, whose sum is σ = 1420340144. Its totient is φ = 1420340142.

The previous prime is 1420340111. The next prime is 1420340147. The reversal of 1420340143 is 3410430241.

It is a strong prime.

It is an emirp because it is prime and its reverse (3410430241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1420340143 - 2⁵ = 1420340111 is a prime.

It is a super-2 number, since 2×1420340143² = 4034732243634520898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420340147) 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 as a sum of consecutive naturals, namely, 710170071 + 710170072.

It is an arithmetic number, because the mean of its divisors is an integer number (710170072).

Almost surely, 2^1420340143 is an apocalyptic number.

1420340143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420340143 is an equidigital number, since it uses as much as digits as its factorization.

1420340143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1420340143 is about 37687.4003215929. The cubic root of 1420340143 is about 1124.0806033706.

Adding to 1420340143 its reverse (3410430241), we get a palindrome (4830770384).

The spelling of 1420340143 in words is "one billion, four hundred twenty million, three hundred forty thousand, one hundred forty-three".