14021001 has 6 divisors (see below), whose sum is σ = 20252570. Its totient is φ = 9347328.

The previous prime is 14020957. The next prime is 14021003. The reversal of 14021001 is 10012041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12638025 + 1382976 = 3555^2 + 1176^2 .

It is not a de Polignac number, because 14021001 - 2⁷ = 14020873 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: 1557889 = 14021001 / (1 + 4 + 0 + 2 + 1 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14021003) 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, 778936 + ... + 778953.

Almost surely, 2^14021001 is an apocalyptic number.

It is an amenable number.

14021001 is a deficient number, since it is larger than the sum of its proper divisors (6231569).

14021001 is a wasteful number, since it uses less digits than its factorization.

14021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557895 (or 1557892 counting only the distinct ones).

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

The square root of 14021001 is about 3744.4627117919. The cubic root of 14021001 is about 241.1346790600.

Adding to 14021001 its reverse (10012041), we get a palindrome (24033042).

The spelling of 14021001 in words is "fourteen million, twenty-one thousand, one".