1421420543 has 2 divisors, whose sum is σ = 1421420544. Its totient is φ = 1421420542.

The previous prime is 1421420521. The next prime is 1421420573. The reversal of 1421420543 is 3450241241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421420543 - 2²⁸ = 1152985087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421420573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710710271 + 710710272.

It is an arithmetic number, because the mean of its divisors is an integer number (710710272).

Almost surely, 2^1421420543 is an apocalyptic number.

1421420543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421420543 is an equidigital number, since it uses as much as digits as its factorization.

1421420543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1421420543 is about 37701.7312997692. The cubic root of 1421420543 is about 1124.3655465910.

Adding to 1421420543 its reverse (3450241241), we get a palindrome (4871661784).

The spelling of 1421420543 in words is "one billion, four hundred twenty-one million, four hundred twenty thousand, five hundred forty-three".