12140843 has 16 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 10008480.

The previous prime is 12140837. The next prime is 12140851. The reversal of 12140843 is 34804121.

It is a cyclic number.

It is not a de Polignac number, because 12140843 - 2⁴ = 12140827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12140813) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7718 + ... + 9156.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^12140843 is an apocalyptic number.

12140843 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12140843 is a deficient number, since it is larger than the sum of its proper divisors (2374357).

12140843 is a wasteful number, since it uses less digits than its factorization.

12140843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 12140843 is about 3484.3712488769. The cubic root of 12140843 is about 229.8350613308.

Adding to 12140843 its reverse (34804121), we get a palindrome (46944964).

Subtracting 12140843 from its reverse (34804121), we obtain a triangular number (22663278 = T₆₇₃₂).

The spelling of 12140843 in words is "twelve million, one hundred forty thousand, eight hundred forty-three".