111243424 has 12 divisors (see below), whose sum is σ = 219010554. Its totient is φ = 55621696.

The previous prime is 111243413. The next prime is 111243467. The reversal of 111243424 is 424342111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 80640400 + 30603024 = 8980^2 + 5532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111243395 and 111243404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1738147 + ... + 1738210.

Almost surely, 2^111243424 is an apocalyptic number.

It is an amenable number.

111243424 is a deficient number, since it is larger than the sum of its proper divisors (107767130).

111243424 is an equidigital number, since it uses as much as digits as its factorization.

111243424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476367 (or 3476359 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 111243424 is about 10547.1998179612. The cubic root of 111243424 is about 480.9406092793.

Adding to 111243424 its reverse (424342111), we get a palindrome (535585535).

The spelling of 111243424 in words is "one hundred eleven million, two hundred forty-three thousand, four hundred twenty-four".