2001432401 has 4 divisors (see below), whose sum is σ = 2001764352. Its totient is φ = 2001100452.

The previous prime is 2001432371. The next prime is 2001432403. The reversal of 2001432401 is 1042341002.

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 2001432401 - 2⁶ = 2001432337 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 2001432401.

It is not an unprimeable number, because it can be changed into a prime (2001432403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156761 + ... + 169046.

It is an arithmetic number, because the mean of its divisors is an integer number (500441088).

Almost surely, 2^2001432401 is an apocalyptic number.

It is an amenable number.

2001432401 is a deficient number, since it is larger than the sum of its proper divisors (331951).

2001432401 is an equidigital number, since it uses as much as digits as its factorization.

2001432401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331950.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2001432401 is about 44737.3714136179. The cubic root of 2001432401 is about 1260.2217634779.

Adding to 2001432401 its reverse (1042341002), we get a palindrome (3043773403).

The spelling of 2001432401 in words is "two billion, one million, four hundred thirty-two thousand, four hundred one".