421424143111 has 2 divisors, whose sum is σ = 421424143112. Its totient is φ = 421424143110.

The previous prime is 421424143103. The next prime is 421424143141. The reversal of 421424143111 is 111341424124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421424143111 - 2³ = 421424143103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421424143111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421424143141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210712071555 + 210712071556.

It is an arithmetic number, because the mean of its divisors is an integer number (210712071556).

Almost surely, 2^421424143111 is an apocalyptic number.

421424143111 is a deficient number, since it is larger than the sum of its proper divisors (1).

421424143111 is an equidigital number, since it uses as much as digits as its factorization.

421424143111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 28.

Adding to 421424143111 its reverse (111341424124), we get a palindrome (532765567235).

The spelling of 421424143111 in words is "four hundred twenty-one billion, four hundred twenty-four million, one hundred forty-three thousand, one hundred eleven".