1001120 has 24 divisors (see below), whose sum is σ = 2365524. Its totient is φ = 400384.

The previous prime is 1001107. The next prime is 1001123. The reversal of 1001120 is 211001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 929296 + 71824 = 964^2 + 268^2 .

It is a Harshad number since it is a multiple of its sum of digits (5).

It is not an unprimeable number, because it can be changed into a prime (1001123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2969 + ... + 3288.

2^1001120 is an apocalyptic number.

1001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001120 is an abundant number, since it is smaller than the sum of its proper divisors (1364404).

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

1001120 is an equidigital number, since it uses as much as digits as its factorization.

1001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6272 (or 6264 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1001120 is about 1000.5598432877. The cubic root of 1001120 is about 100.0373194042.

Adding to 1001120 its reverse (211001), we get a palindrome (1212121).

The spelling of 1001120 in words is "one million, one thousand, one hundred twenty".