420134312111 has 2 divisors, whose sum is σ = 420134312112. Its totient is φ = 420134312110.

The previous prime is 420134312069. The next prime is 420134312149. The reversal of 420134312111 is 111213431024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420134312111 is a prime.

It is a super-2 number, since 2×420134312111² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420134302111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210067156055 + 210067156056.

It is an arithmetic number, because the mean of its divisors is an integer number (210067156056).

Almost surely, 2^420134312111 is an apocalyptic number.

420134312111 is a deficient number, since it is larger than the sum of its proper divisors (1).

420134312111 is an equidigital number, since it uses as much as digits as its factorization.

420134312111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 420134312111 its reverse (111213431024), we get a palindrome (531347743135).

The spelling of 420134312111 in words is "four hundred twenty billion, one hundred thirty-four million, three hundred twelve thousand, one hundred eleven".