14642021 has 4 divisors (see below), whose sum is σ = 14724000. Its totient is φ = 14560044.

The previous prime is 14642009. The next prime is 14642029. The reversal of 14642021 is 12024641.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14642021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14641984 and 14642002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14642029) 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, 40721 + ... + 41078.

It is an arithmetic number, because the mean of its divisors is an integer number (3681000).

Almost surely, 2^14642021 is an apocalyptic number.

It is an amenable number.

14642021 is a deficient number, since it is larger than the sum of its proper divisors (81979).

14642021 is an equidigital number, since it uses as much as digits as its factorization.

14642021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81978.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 14642021 is about 3826.4893832337. The cubic root of 14642021 is about 244.6434964913.

Adding to 14642021 its reverse (12024641), we get a palindrome (26666662).

The spelling of 14642021 in words is "fourteen million, six hundred forty-two thousand, twenty-one".