12078001 has 4 divisors (see below), whose sum is σ = 13007092. Its totient is φ = 11148912.

The previous prime is 12077993. The next prime is 12078019. The reversal of 12078001 is 10087021.

12078001 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.

It can be written as a sum of positive squares in 2 ways, for example, as 4243600 + 7834401 = 2060^2 + 2799^2 .

It is a cyclic number.

It is not a de Polignac number, because 12078001 - 2³ = 12077993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12078001.

It is not an unprimeable number, because it can be changed into a prime (12078401) 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, 464526 + ... + 464551.

It is an arithmetic number, because the mean of its divisors is an integer number (3251773).

Almost surely, 2^12078001 is an apocalyptic number.

It is an amenable number.

12078001 is a deficient number, since it is larger than the sum of its proper divisors (929091).

12078001 is an equidigital number, since it uses as much as digits as its factorization.

12078001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929090.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 12078001 is about 3475.3418536886. The cubic root of 12078001 is about 229.4378267861.

It can be divided in two parts, 1207800 and 1, that added together give a square (1207801 = 1099²).

The spelling of 12078001 in words is "twelve million, seventy-eight thousand, one".