14742821 has 4 divisors (see below), whose sum is σ = 15102444. Its totient is φ = 14383200.

The previous prime is 14742811. The next prime is 14742823. The reversal of 14742821 is 12824741.

14742821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 829921 + 13912900 = 911^2 + 3730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14742821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14742823) 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, 179750 + ... + 179831.

It is an arithmetic number, because the mean of its divisors is an integer number (3775611).

Almost surely, 2^14742821 is an apocalyptic number.

It is an amenable number.

14742821 is a deficient number, since it is larger than the sum of its proper divisors (359623).

14742821 is an equidigital number, since it uses as much as digits as its factorization.

14742821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359622.

The product of its digits is 3584, while the sum is 29.

The square root of 14742821 is about 3839.6381339913. The cubic root of 14742821 is about 245.2036124942.

The spelling of 14742821 in words is "fourteen million, seven hundred forty-two thousand, eight hundred twenty-one".