14242821 has 16 divisors (see below), whose sum is σ = 20225664. Its totient is φ = 8884224.

The previous prime is 14242783. The next prime is 14242853. The reversal of 14242821 is 12824241.

It is not a de Polignac number, because 14242821 - 2⁶ = 14242757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14242791 and 14242800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14242871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9120 + ... + 10566.

It is an arithmetic number, because the mean of its divisors is an integer number (1264104).

Almost surely, 2^14242821 is an apocalyptic number.

It is an amenable number.

14242821 is a deficient number, since it is larger than the sum of its proper divisors (5982843).

14242821 is a wasteful number, since it uses less digits than its factorization.

14242821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its digits is 1024, while the sum is 24.

The square root of 14242821 is about 3773.9662160650. The cubic root of 14242821 is about 242.3996594828.

It can be divided in two parts, 1424 and 2821, that multiplied together give a palindrome (4017104).

The spelling of 14242821 in words is "fourteen million, two hundred forty-two thousand, eight hundred twenty-one".