14010021 has 6 divisors (see below), whose sum is σ = 20236710. Its totient is φ = 9340008.

The previous prime is 14010019. The next prime is 14010037. The reversal of 14010021 is 12001041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13793796 + 216225 = 3714^2 + 465^2 .

It is not a de Polignac number, because 14010021 - 2¹ = 14010019 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: 1556669 = 14010021 / (1 + 4 + 0 + 1 + 0 + 0 + 2 + 1).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14009985 and 14010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14010071) 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, 778326 + ... + 778343.

It is an arithmetic number, because the mean of its divisors is an integer number (3372785).

Almost surely, 2^14010021 is an apocalyptic number.

It is an amenable number.

14010021 is a deficient number, since it is larger than the sum of its proper divisors (6226689).

14010021 is a wasteful number, since it uses less digits than its factorization.

14010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556675 (or 1556672 counting only the distinct ones).

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

The square root of 14010021 is about 3742.9962596829. The cubic root of 14010021 is about 241.0717175493.

Adding to 14010021 its reverse (12001041), we get a palindrome (26011062).

The spelling of 14010021 in words is "fourteen million, ten thousand, twenty-one".