12140855 has 4 divisors (see below), whose sum is σ = 14569032. Its totient is φ = 9712680.

The previous prime is 12140851. The next prime is 12140861. The reversal of 12140855 is 55804121.

12140855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55804121 = 19 ⋅2937059.

It is not a de Polignac number, because 12140855 - 2² = 12140851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214081 + ... + 1214090.

It is an arithmetic number, because the mean of its divisors is an integer number (3642258).

Almost surely, 2^12140855 is an apocalyptic number.

12140855 is a deficient number, since it is larger than the sum of its proper divisors (2428177).

12140855 is an equidigital number, since it uses as much as digits as its factorization.

12140855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428176.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 12140855 is about 3484.3729708514. The cubic root of 12140855 is about 229.8351370537.

Adding to 12140855 its reverse (55804121), we get a palindrome (67944976).

The spelling of 12140855 in words is "twelve million, one hundred forty thousand, eight hundred fifty-five".