12155041 has 4 divisors (see below), whose sum is σ = 12794800. Its totient is φ = 11515284.

The previous prime is 12155029. The next prime is 12155057. The reversal of 12155041 is 14055121.

12155041 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12155041 - 2⁷ = 12154913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 639739 = 12155041 / (1 + 2 + 1 + 5 + 5 + 0 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12155021) 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, 319851 + ... + 319888.

It is an arithmetic number, because the mean of its divisors is an integer number (3198700).

Almost surely, 2^12155041 is an apocalyptic number.

It is an amenable number.

12155041 is a deficient number, since it is larger than the sum of its proper divisors (639759).

12155041 is an equidigital number, since it uses as much as digits as its factorization.

12155041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639758.

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

The square root of 12155041 is about 3486.4080369343. The cubic root of 12155041 is about 229.9246192796.

The spelling of 12155041 in words is "twelve million, one hundred fifty-five thousand, forty-one".