1420427443 has 2 divisors, whose sum is σ = 1420427444. Its totient is φ = 1420427442.

The previous prime is 1420427387. The next prime is 1420427531. The reversal of 1420427443 is 3447240241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420427443 is a prime.

It is a super-2 number, since 2×1420427443² = 4035228241655036498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1420427243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710213721 + 710213722.

It is an arithmetic number, because the mean of its divisors is an integer number (710213722).

Almost surely, 2^1420427443 is an apocalyptic number.

1420427443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420427443 is an equidigital number, since it uses as much as digits as its factorization.

1420427443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 1420427443 is about 37688.5585158148. The cubic root of 1420427443 is about 1124.1036331185.

Adding to 1420427443 its reverse (3447240241), we get a palindrome (4867667684).

The spelling of 1420427443 in words is "one billion, four hundred twenty million, four hundred twenty-seven thousand, four hundred forty-three".