4211421 has 4 divisors (see below), whose sum is σ = 5615232. Its totient is φ = 2807612.

The previous prime is 4211401. The next prime is 4211423. The reversal of 4211421 is 1241124.

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 4211421 - 2¹⁰ = 4210397 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 4211421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4211423) 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, 701901 + ... + 701906.

It is an arithmetic number, because the mean of its divisors is an integer number (1403808).

Almost surely, 2^4211421 is an apocalyptic number.

It is an amenable number.

4211421 is a deficient number, since it is larger than the sum of its proper divisors (1403811).

4211421 is a wasteful number, since it uses less digits than its factorization.

4211421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403810.

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

The square root of 4211421 is about 2052.1747001657. The cubic root of 4211421 is about 161.4889780233.

Adding to 4211421 its reverse (1241124), we get a palindrome (5452545).

The spelling of 4211421 in words is "four million, two hundred eleven thousand, four hundred twenty-one".