12113140 has 24 divisors (see below), whose sum is σ = 27394920. Its totient is φ = 4472448.

The previous prime is 12113119. The next prime is 12113147. The reversal of 12113140 is 4131121.

It can be written as a sum of positive squares in 4 ways, for example, as 252004 + 11861136 = 502^2 + 3444^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 12113140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23035 + ... + 23554.

It is an arithmetic number, because the mean of its divisors is an integer number (1141455).

Almost surely, 2^12113140 is an apocalyptic number.

12113140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12113140 is an abundant number, since it is smaller than the sum of its proper divisors (15281780).

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

12113140 is a wasteful number, since it uses less digits than its factorization.

12113140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46611 (or 46609 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 12113140 is about 3480.3936558958. The cubic root of 12113140 is about 229.6601154975.

Adding to 12113140 its reverse (4131121), we get a palindrome (16244261).

The spelling of 12113140 in words is "twelve million, one hundred thirteen thousand, one hundred forty".