42430111 has 2 divisors, whose sum is σ = 42430112. Its totient is φ = 42430110.

The previous prime is 42430109. The next prime is 42430117. The reversal of 42430111 is 11103424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42430111 - 2¹ = 42430109 is a prime.

Together with 42430109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42430117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215055 + 21215056.

It is an arithmetic number, because the mean of its divisors is an integer number (21215056).

Almost surely, 2^42430111 is an apocalyptic number.

42430111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42430111 is an equidigital number, since it uses as much as digits as its factorization.

42430111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 42430111 is about 6513.8399581199. The cubic root of 42430111 is about 348.7852062110.

Adding to 42430111 its reverse (11103424), we get a palindrome (53533535).

The spelling of 42430111 in words is "forty-two million, four hundred thirty thousand, one hundred eleven".