12840141 has 16 divisors (see below), whose sum is σ = 17948160. Its totient is φ = 8149680.

The previous prime is 12840133. The next prime is 12840193. The reversal of 12840141 is 14104821.

It is a happy number.

It is not a de Polignac number, because 12840141 - 2³ = 12840133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25906 + ... + 26396.

It is an arithmetic number, because the mean of its divisors is an integer number (1121760).

Almost surely, 2^12840141 is an apocalyptic number.

It is an amenable number.

12840141 is a deficient number, since it is larger than the sum of its proper divisors (5108019).

12840141 is a wasteful number, since it uses less digits than its factorization.

12840141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 12840141 is about 3583.3142480112. The cubic root of 12840141 is about 234.1656909629.

Adding to 12840141 its reverse (14104821), we get a palindrome (26944962).

The spelling of 12840141 in words is "twelve million, eight hundred forty thousand, one hundred forty-one".