1140540 has 24 divisors (see below), whose sum is σ = 3193680. Its totient is φ = 304128.

The previous prime is 1140539. The next prime is 1140563. The reversal of 1140540 is 450411.

1140540 is nontrivially palindromic in base 14.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 9445 + ... + 9564.

It is an arithmetic number, because the mean of its divisors is an integer number (133070).

2^1140540 is an apocalyptic number.

1140540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140540 is an abundant number, since it is smaller than the sum of its proper divisors (2053140).

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

1140540 is a wasteful number, since it uses less digits than its factorization.

1140540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19021 (or 19019 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1140540 is about 1067.9606734332. The cubic root of 1140540 is about 104.4808844563.

Adding to 1140540 its reverse (450411), we get a palindrome (1590951).

The spelling of 1140540 in words is "one million, one hundred forty thousand, five hundred forty".