14120021 has 4 divisors (see below), whose sum is σ = 14863200. Its totient is φ = 13376844.

The previous prime is 14120011. The next prime is 14120023. The reversal of 14120021 is 12002141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12002141 = 2663 ⋅4507.

It is a cyclic number.

It is not a de Polignac number, because 14120021 - 2⁶ = 14119957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14119984 and 14120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14120023) 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, 371561 + ... + 371598.

It is an arithmetic number, because the mean of its divisors is an integer number (3715800).

Almost surely, 2^14120021 is an apocalyptic number.

It is an amenable number.

14120021 is a deficient number, since it is larger than the sum of its proper divisors (743179).

14120021 is an equidigital number, since it uses as much as digits as its factorization.

14120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743178.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 14120021 is about 3757.6616399032. The cubic root of 14120021 is about 241.7010001689.

Adding to 14120021 its reverse (12002141), we get a palindrome (26122162).

The spelling of 14120021 in words is "fourteen million, one hundred twenty thousand, twenty-one".