111242644 has 12 divisors (see below), whose sum is σ = 204920800. Its totient is φ = 52693848.

The previous prime is 111242641. The next prime is 111242647. The reversal of 111242644 is 446242111.

It is an interprime number because it is at equal distance from previous prime (111242641) and next prime (111242647).

It is a super-2 number, since 2×111242644² = 24749851688221472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111242641) 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 in 3 ways as a sum of consecutive naturals, for example, 731784 + ... + 731935.

Almost surely, 2^111242644 is an apocalyptic number.

It is an amenable number.

111242644 is a deficient number, since it is larger than the sum of its proper divisors (93678156).

111242644 is a wasteful number, since it uses less digits than its factorization.

111242644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463742 (or 1463740 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 111242644 is about 10547.1628412574. The cubic root of 111242644 is about 480.9394852142.

Adding to 111242644 its reverse (446242111), we get a palindrome (557484755).

The spelling of 111242644 in words is "one hundred eleven million, two hundred forty-two thousand, six hundred forty-four".