420342244111 has 2 divisors, whose sum is σ = 420342244112. Its totient is φ = 420342244110.

The previous prime is 420342244081. The next prime is 420342244117. The reversal of 420342244111 is 111442243024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420342244111 - 2⁷ = 420342243983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420342244111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420342244117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210171122055 + 210171122056.

It is an arithmetic number, because the mean of its divisors is an integer number (210171122056).

Almost surely, 2^420342244111 is an apocalyptic number.

420342244111 is a deficient number, since it is larger than the sum of its proper divisors (1).

420342244111 is an equidigital number, since it uses as much as digits as its factorization.

420342244111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 420342244111 its reverse (111442243024), we get a palindrome (531784487135).

The spelling of 420342244111 in words is "four hundred twenty billion, three hundred forty-two million, two hundred forty-four thousand, one hundred eleven".