12540141 has 12 divisors (see below), whose sum is σ = 18151068. Its totient is φ = 8342784.

The previous prime is 12540127. The next prime is 12540149. The reversal of 12540141 is 14104521.

It can be written as a sum of positive squares in 2 ways, for example, as 4536900 + 8003241 = 2130^2 + 2829^2 .

It is not a de Polignac number, because 12540141 - 2⁵ = 12540109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4381 + ... + 6653.

It is an arithmetic number, because the mean of its divisors is an integer number (1512589).

Almost surely, 2^12540141 is an apocalyptic number.

It is an amenable number.

12540141 is a deficient number, since it is larger than the sum of its proper divisors (5610927).

12540141 is a wasteful number, since it uses less digits than its factorization.

12540141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892 (or 2889 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 12540141 is about 3541.2061504521. The cubic root of 12540141 is about 232.3276002575.

Adding to 12540141 its reverse (14104521), we get a palindrome (26644662).

It can be divided in two parts, 12540 and 141, that multiplied together give a triangular number (1768140 = T₁₈₈₀).

The spelling of 12540141 in words is "twelve million, five hundred forty thousand, one hundred forty-one".