12042001 has 4 divisors (see below), whose sum is σ = 12750372. Its totient is φ = 11333632.

The previous prime is 12041999. The next prime is 12042053. The reversal of 12042001 is 10024021.

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 10246401 + 1795600 = 3201^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 12042001 - 2¹ = 12041999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12042061) 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, 354160 + ... + 354193.

It is an arithmetic number, because the mean of its divisors is an integer number (3187593).

Almost surely, 2^12042001 is an apocalyptic number.

It is an amenable number.

12042001 is a deficient number, since it is larger than the sum of its proper divisors (708371).

12042001 is an equidigital number, since it uses as much as digits as its factorization.

12042001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708370.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 12042001 is about 3470.1586419067. The cubic root of 12042001 is about 229.2096438332.

Adding to 12042001 its reverse (10024021), we get a palindrome (22066022).

The spelling of 12042001 in words is "twelve million, forty-two thousand, one".