2000402001 has 48 divisors (see below), whose sum is σ = 3235552320. Its totient is φ = 1227752640.

The previous prime is 2000401999. The next prime is 2000402029. The reversal of 2000402001 is 1002040002.

It is not a de Polignac number, because 2000402001 - 2¹ = 2000401999 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 (2000402101) 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 47 ways as a sum of consecutive naturals, for example, 1803235 + ... + 1804343.

It is an arithmetic number, because the mean of its divisors is an integer number (67407340).

Almost surely, 2^2000402001 is an apocalyptic number.

It is an amenable number.

2000402001 is a deficient number, since it is larger than the sum of its proper divisors (1235150319).

2000402001 is a wasteful number, since it uses less digits than its factorization.

2000402001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 1696 counting only the distinct ones).

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

The square root of 2000402001 is about 44725.8538319840. The cubic root of 2000402001 is about 1260.0054591600.

Adding to 2000402001 its reverse (1002040002), we get a palindrome (3002442003).

The spelling of 2000402001 in words is "two billion, four hundred two thousand, one".