4200001 has 4 divisors (see below), whose sum is σ = 4523092. Its totient is φ = 3876912.

The previous prime is 4199989. The next prime is 4200013. The reversal of 4200001 is 1000024.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4199989) and next prime (4200013).

It can be written as a sum of positive squares in 2 ways, for example, as 680625 + 3519376 = 825^2 + 1876^2 .

It is not a de Polignac number, because 4200001 - 2¹⁹ = 3675713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4200401) 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, 161526 + ... + 161551.

It is an arithmetic number, because the mean of its divisors is an integer number (1130773).

Almost surely, 2^4200001 is an apocalyptic number.

It is an amenable number.

4200001 is a deficient number, since it is larger than the sum of its proper divisors (323091).

4200001 is a wasteful number, since it uses less digits than its factorization.

4200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323090.

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

The square root of 4200001 is about 2049.3903971669. The cubic root of 4200001 is about 161.3428774074.

Adding to 4200001 its reverse (1000024), we get a palindrome (5200025).

The spelling of 4200001 in words is "four million, two hundred thousand, one".