420134111 has 2 divisors, whose sum is σ = 420134112. Its totient is φ = 420134110.

The previous prime is 420134083. The next prime is 420134147. The reversal of 420134111 is 111431024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420134111 - 2⁶ = 420134047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420134111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420134411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210067055 + 210067056.

It is an arithmetic number, because the mean of its divisors is an integer number (210067056).

Almost surely, 2^420134111 is an apocalyptic number.

420134111 is a deficient number, since it is larger than the sum of its proper divisors (1).

420134111 is an equidigital number, since it uses as much as digits as its factorization.

420134111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 420134111 is about 20497.1732441330. The cubic root of 420134111 is about 748.9669397762.

Adding to 420134111 its reverse (111431024), we get a palindrome (531565135).

The spelling of 420134111 in words is "four hundred twenty million, one hundred thirty-four thousand, one hundred eleven".