2002401 has 20 divisors (see below), whose sum is σ = 3049200. Its totient is φ = 1309176.

The previous prime is 2002397. The next prime is 2002417. The reversal of 2002401 is 1042002.

It is not a de Polignac number, because 2002401 - 2² = 2002397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2002471) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4570 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (152460).

2^2002401 is an apocalyptic number.

It is an amenable number.

2002401 is a deficient number, since it is larger than the sum of its proper divisors (1046799).

2002401 is an equidigital number, since it uses as much as digits as its factorization.

2002401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2002401 is about 1415.0621894461. The cubic root of 2002401 is about 126.0425026681.

Adding to 2002401 its reverse (1042002), we get a palindrome (3044403).

It can be divided in two parts, 200 and 2401, that added together give a square (2601 = 51²).

The spelling of 2002401 in words is "two million, two thousand, four hundred one".