1112400 has 120 divisors (see below), whose sum is σ = 3997760. Its totient is φ = 293760.

The previous prime is 1112389. The next prime is 1112413. The reversal of 1112400 is 42111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10749 + ... + 10851.

2^1112400 is an apocalyptic number.

1112400 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 1112400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1998880).

1112400 is an abundant number, since it is smaller than the sum of its proper divisors (2885360).

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

1112400 is a wasteful number, since it uses less digits than its factorization.

1112400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1112400 is about 1054.7037498748. The cubic root of 1112400 is about 103.6144501641.

Adding to 1112400 its reverse (42111), we get a palindrome (1154511).

The spelling of 1112400 in words is "one million, one hundred twelve thousand, four hundred".