1120400 has 30 divisors (see below), whose sum is σ = 2692722. Its totient is φ = 448000.

The previous prime is 1120391. The next prime is 1120423. The reversal of 1120400 is 40211.

1120400 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 3 ways, for example, as 71824 + 1048576 = 268^2 + 1024^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1001 + ... + 1800.

2^1120400 is an apocalyptic number.

1120400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120400 is an abundant number, since it is smaller than the sum of its proper divisors (1572322).

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

1120400 is a wasteful number, since it uses less digits than its factorization.

1120400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819 (or 2808 counting only the distinct ones).

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

The square root of 1120400 is about 1058.4894897919. The cubic root of 1120400 is about 103.8622436467.

Adding to 1120400 its reverse (40211), we get a palindrome (1160611).

The spelling of 1120400 in words is "one million, one hundred twenty thousand, four hundred".