111424320 has 168 divisors, whose sum is σ = 438082944. Its totient is φ = 25463808.

The previous prime is 111424319. The next prime is 111424321. The reversal of 111424320 is 23424111.

It is an interprime number because it is at equal distance from previous prime (111424319) and next prime (111424321).

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111424293 and 111424302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111424321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17397 + ... + 22923.

Almost surely, 2^111424320 is an apocalyptic number.

111424320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111424320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219041472).

111424320 is an abundant number, since it is smaller than the sum of its proper divisors (326658624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111424320 is a wasteful number, since it uses less digits than its factorization.

111424320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 111424320 is about 10555.7718808243. The cubic root of 111424320 is about 481.2011583648.

Adding to 111424320 its reverse (23424111), we get a palindrome (134848431).

The spelling of 111424320 in words is "one hundred eleven million, four hundred twenty-four thousand, three hundred twenty".