1144140 has 24 divisors (see below), whose sum is σ = 3203760. Its totient is φ = 305088.

The previous prime is 1144139. The next prime is 1144141. The reversal of 1144140 is 414411.

It is an interprime number because it is at equal distance from previous prime (1144139) and next prime (1144141).

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

It is not an unprimeable number, because it can be changed into a prime (1144141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9475 + ... + 9594.

It is an arithmetic number, because the mean of its divisors is an integer number (133490).

2^1144140 is an apocalyptic number.

1144140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144140 is an abundant number, since it is smaller than the sum of its proper divisors (2059620).

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

1144140 is a wasteful number, since it uses less digits than its factorization.

1144140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19081 (or 19079 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1144140 is about 1069.6448008568. The cubic root of 1144140 is about 104.5906968073.

Adding to 1144140 its reverse (414411), we get a palindrome (1558551).

The spelling of 1144140 in words is "one million, one hundred forty-four thousand, one hundred forty".