1001140 has 24 divisors (see below), whose sum is σ = 2403072. Its totient is φ = 343200.

The previous prime is 1001123. The next prime is 1001153. The reversal of 1001140 is 411001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3436 + ... + 3715.

It is an arithmetic number, because the mean of its divisors is an integer number (100128).

2^1001140 is an apocalyptic number.

1001140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001140 is an abundant number, since it is smaller than the sum of its proper divisors (1401932).

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

1001140 is a wasteful number, since it uses less digits than its factorization.

1001140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167 (or 7165 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1001140 is about 1000.5698376425. The cubic root of 1001140 is about 100.0379855691.

Adding to 1001140 its reverse (411001), we get a palindrome (1412141).

The spelling of 1001140 in words is "one million, one thousand, one hundred forty".