42424111 has 2 divisors, whose sum is σ = 42424112. Its totient is φ = 42424110.

The previous prime is 42424103. The next prime is 42424117. The reversal of 42424111 is 11142424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42424111 - 2³ = 42424103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42424117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212055 + 21212056.

It is an arithmetic number, because the mean of its divisors is an integer number (21212056).

Almost surely, 2^42424111 is an apocalyptic number.

42424111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424111 is an equidigital number, since it uses as much as digits as its factorization.

42424111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 256, while the sum is 19.

The square root of 42424111 is about 6513.3793840064. The cubic root of 42424111 is about 348.7687649791.

Adding to 42424111 its reverse (11142424), we get a palindrome (53566535).

The spelling of 42424111 in words is "forty-two million, four hundred twenty-four thousand, one hundred eleven".