111204424 has 8 divisors (see below), whose sum is σ = 208508310. Its totient is φ = 55602208.

The previous prime is 111204421. The next prime is 111204449. The reversal of 111204424 is 424402111.

It can be written as a sum of positive squares in only one way, i.e., 71740900 + 39463524 = 8470^2 + 6282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (111204421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950269 + ... + 6950284.

Almost surely, 2^111204424 is an apocalyptic number.

It is an amenable number.

111204424 is a deficient number, since it is larger than the sum of its proper divisors (97303886).

111204424 is a wasteful number, since it uses less digits than its factorization.

111204424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13900559 (or 13900555 counting only the distinct ones).

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

The square root of 111204424 is about 10545.3508239413. The cubic root of 111204424 is about 480.8843995863.

Adding to 111204424 its reverse (424402111), we get a palindrome (535606535).

It can be divided in two parts, 111204 and 424, that added together give a triangular number (111628 = T₄₇₂).

The spelling of 111204424 in words is "one hundred eleven million, two hundred four thousand, four hundred twenty-four".