4053421 has 4 divisors (see below), whose sum is σ = 4139712. Its totient is φ = 3967132.

The previous prime is 4053407. The next prime is 4053437. The reversal of 4053421 is 1243504.

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 4053421 - 2¹³ = 4045229 is a prime.

It is a Duffinian number.

4053421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4053121) 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, 43075 + ... + 43168.

It is an arithmetic number, because the mean of its divisors is an integer number (1034928).

Almost surely, 2^4053421 is an apocalyptic number.

It is an amenable number.

4053421 is a deficient number, since it is larger than the sum of its proper divisors (86291).

4053421 is an equidigital number, since it uses as much as digits as its factorization.

4053421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86290.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4053421 is about 2013.3109546218. The cubic root of 4053421 is about 159.4436536720.

Adding to 4053421 its reverse (1243504), we get a palindrome (5296925).

The spelling of 4053421 in words is "four million, fifty-three thousand, four hundred twenty-one".