12140538 has 16 divisors (see below), whose sum is σ = 24457440. Its totient is φ = 4017456.

The previous prime is 12140521. The next prime is 12140539. The reversal of 12140538 is 83504121.

It is not an unprimeable number, because it can be changed into a prime (12140539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6445 + ... + 8112.

It is an arithmetic number, because the mean of its divisors is an integer number (1528590).

Almost surely, 2^12140538 is an apocalyptic number.

12140538 is an abundant number, since it is smaller than the sum of its proper divisors (12316902).

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

12140538 is a wasteful number, since it uses less digits than its factorization.

12140538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14701.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12140538 is about 3484.3274817388. The cubic root of 12140538 is about 229.8331366901.

Adding to 12140538 its reverse (83504121), we get a palindrome (95644659).

The spelling of 12140538 in words is "twelve million, one hundred forty thousand, five hundred thirty-eight".