12140155 has 8 divisors (see below), whose sum is σ = 14697792. Its totient is φ = 9625728.

The previous prime is 12140153. The next prime is 12140201. The reversal of 12140155 is 55104121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12140155 - 2¹ = 12140153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12140153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10179 + ... + 11308.

It is an arithmetic number, because the mean of its divisors is an integer number (1837224).

Almost surely, 2^12140155 is an apocalyptic number.

12140155 is a deficient number, since it is larger than the sum of its proper divisors (2557637).

12140155 is a wasteful number, since it uses less digits than its factorization.

12140155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21605.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 12140155 is about 3484.2725209145. The cubic root of 12140155 is about 229.8307198006.

Adding to 12140155 its reverse (55104121), we get a palindrome (67244276).

The spelling of 12140155 in words is "twelve million, one hundred forty thousand, one hundred fifty-five".