2141421 has 4 divisors (see below), whose sum is σ = 2855232. Its totient is φ = 1427612.

The previous prime is 2141417. The next prime is 2141437. The reversal of 2141421 is 1241412.

2141421 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2141421 - 2² = 2141417 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2141421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356901 + ... + 356906.

It is an arithmetic number, because the mean of its divisors is an integer number (713808).

2^2141421 is an apocalyptic number.

It is an amenable number.

2141421 is a deficient number, since it is larger than the sum of its proper divisors (713811).

2141421 is an equidigital number, since it uses as much as digits as its factorization.

2141421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713810.

The product of its digits is 64, while the sum is 15.

The square root of 2141421 is about 1463.3594910342. The cubic root of 2141421 is about 128.8943910596.

Adding to 2141421 its reverse (1241412), we get a palindrome (3382833).

Subtracting from 2141421 its reverse (1241412), we obtain a palindrome (900009).

The spelling of 2141421 in words is "two million, one hundred forty-one thousand, four hundred twenty-one".