4121001 has 6 divisors (see below), whose sum is σ = 5952570. Its totient is φ = 2747328.

The previous prime is 4120999. The next prime is 4121003. The reversal of 4121001 is 1001214.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4120999) and next prime (4121003).

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 1687401 = 1560^2 + 1299^2 .

It is not a de Polignac number, because 4121001 - 2¹ = 4120999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 457889 = 4121001 / (4 + 1 + 2 + 1 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (4121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228936 + ... + 228953.

It is an arithmetic number, because the mean of its divisors is an integer number (992095).

Almost surely, 2^4121001 is an apocalyptic number.

It is an amenable number.

4121001 is a deficient number, since it is larger than the sum of its proper divisors (1831569).

4121001 is a wasteful number, since it uses less digits than its factorization.

4121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457895 (or 457892 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 4121001 is about 2030.0248766949. The cubic root of 4121001 is about 160.3248737642.

Adding to 4121001 its reverse (1001214), we get a palindrome (5122215).

The spelling of 4121001 in words is "four million, one hundred twenty-one thousand, one".