1140140 has 24 divisors (see below), whose sum is σ = 2420880. Its totient is φ = 451008.

The previous prime is 1140137. The next prime is 1140143. The reversal of 1140140 is 410411.

It is an interprime number because it is at equal distance from previous prime (1140137) and next prime (1140143).

It is not an unprimeable number, because it can be changed into a prime (1140143) 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, 1919 + ... + 2441.

It is an arithmetic number, because the mean of its divisors is an integer number (100870).

2^1140140 is an apocalyptic number.

1140140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1140140 is the 872-nd pentagonal number.

It is an amenable number.

1140140 is an abundant number, since it is smaller than the sum of its proper divisors (1280740).

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

1140140 is a wasteful number, since it uses less digits than its factorization.

1140140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1140140 is about 1067.7733841972. The cubic root of 1140140 is about 104.4686688274.

Adding to 1140140 its reverse (410411), we get a palindrome (1550551).

The spelling of 1140140 in words is "one million, one hundred forty thousand, one hundred forty".