2040001 has 4 divisors (see below), whose sum is σ = 2056192. Its totient is φ = 2023812.

The previous prime is 2039993. The next prime is 2040019. The reversal of 2040001 is 1000402.

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 2040001 - 2³ = 2039993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040041) 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, 7905 + ... + 8158.

It is an arithmetic number, because the mean of its divisors is an integer number (514048).

2^2040001 is an apocalyptic number.

It is an amenable number.

2040001 is a deficient number, since it is larger than the sum of its proper divisors (16191).

2040001 is a wasteful number, since it uses less digits than its factorization.

2040001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16190.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2040001 is about 1428.2860357785. The cubic root of 2040001 is about 126.8265348310.

Adding to 2040001 its reverse (1000402), we get a palindrome (3040403).

The spelling of 2040001 in words is "two million, forty thousand, one".