1140240 has 40 divisors (see below), whose sum is σ = 3535488. Its totient is φ = 304000.

The previous prime is 1140239. The next prime is 1140253. The reversal of 1140240 is 420411.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2136 + ... + 2615.

2^1140240 is an apocalyptic number.

1140240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140240 is an abundant number, since it is smaller than the sum of its proper divisors (2395248).

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

1140240 is a wasteful number, since it uses less digits than its factorization.

1140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767 (or 4761 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1140240 is about 1067.8202095859. The cubic root of 1140240 is about 104.4717230024.

Adding to 1140240 its reverse (420411), we get a palindrome (1560651).

The spelling of 1140240 in words is "one million, one hundred forty thousand, two hundred forty".