12401155 has 8 divisors (see below), whose sum is σ = 16026192. Its totient is φ = 9157728.

The previous prime is 12401153. The next prime is 12401173. The reversal of 12401155 is 55110421.

12401155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12401155 - 2¹ = 12401153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12401153) 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, 95329 + ... + 95458.

It is an arithmetic number, because the mean of its divisors is an integer number (2003274).

Almost surely, 2^12401155 is an apocalyptic number.

12401155 is a deficient number, since it is larger than the sum of its proper divisors (3625037).

12401155 is a wasteful number, since it uses less digits than its factorization.

12401155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190805.

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

The square root of 12401155 is about 3521.5273674927. The cubic root of 12401155 is about 231.4660916552.

Adding to 12401155 its reverse (55110421), we get a palindrome (67511576).

The spelling of 12401155 in words is "twelve million, four hundred one thousand, one hundred fifty-five".