14202821 has 2 divisors, whose sum is σ = 14202822. Its totient is φ = 14202820.

The previous prime is 14202787. The next prime is 14202827. The reversal of 14202821 is 12820241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13586596 + 616225 = 3686^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 14202821 - 2⁶ = 14202757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14202793 and 14202802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14202827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7101410 + 7101411.

It is an arithmetic number, because the mean of its divisors is an integer number (7101411).

Almost surely, 2^14202821 is an apocalyptic number.

It is an amenable number.

14202821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14202821 is an equidigital number, since it uses as much as digits as its factorization.

14202821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 14202821 is about 3768.6630255304. The cubic root of 14202821 is about 242.1725257006.

The spelling of 14202821 in words is "fourteen million, two hundred two thousand, eight hundred twenty-one".