2001442401 has 12 divisors (see below), whose sum is σ = 3303968512. Its totient is φ = 1143681336.

The previous prime is 2001442397. The next prime is 2001442411. The reversal of 2001442401 is 1042441002.

It is not a de Polignac number, because 2001442401 - 2² = 2001442397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2001442411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15884401 + ... + 15884526.

Almost surely, 2^2001442401 is an apocalyptic number.

2001442401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2001442401 is a deficient number, since it is larger than the sum of its proper divisors (1302526111).

2001442401 is a wasteful number, since it uses less digits than its factorization.

2001442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31768940 (or 31768937 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2001442401 is about 44737.4831768619. The cubic root of 2001442401 is about 1260.2238623408.

Adding to 2001442401 its reverse (1042441002), we get a palindrome (3043883403).

The spelling of 2001442401 in words is "two billion, one million, four hundred forty-two thousand, four hundred one".