111424241 has 2 divisors, whose sum is σ = 111424242. Its totient is φ = 111424240.

The previous prime is 111424231. The next prime is 111424249. The reversal of 111424241 is 142424111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97436641 + 13987600 = 9871^2 + 3740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111424241 is a prime.

It is a super-2 number, since 2×111424241² = 24830722964852162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111424249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55712120 + 55712121.

It is an arithmetic number, because the mean of its divisors is an integer number (55712121).

Almost surely, 2^111424241 is an apocalyptic number.

It is an amenable number.

111424241 is a deficient number, since it is larger than the sum of its proper divisors (1).

111424241 is an equidigital number, since it uses as much as digits as its factorization.

111424241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 256, while the sum is 20.

The square root of 111424241 is about 10555.7681387950. The cubic root of 111424241 is about 481.2010446407.

Adding to 111424241 its reverse (142424111), we get a palindrome (253848352).

It can be divided in two parts, 11 and 1424241, that multiplied together give a palindrome (15666651).

The spelling of 111424241 in words is "one hundred eleven million, four hundred twenty-four thousand, two hundred forty-one".