4135421 has 4 divisors (see below), whose sum is σ = 4160352. Its totient is φ = 4110492.

The previous prime is 4135381. The next prime is 4135427. The reversal of 4135421 is 1245314.

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 4135421 - 2⁶ = 4135357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4135393 and 4135402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4135427) 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, 12215 + ... + 12548.

It is an arithmetic number, because the mean of its divisors is an integer number (1040088).

Almost surely, 2^4135421 is an apocalyptic number.

It is an amenable number.

4135421 is a deficient number, since it is larger than the sum of its proper divisors (24931).

4135421 is a wasteful number, since it uses less digits than its factorization.

4135421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24930.

The product of its digits is 480, while the sum is 20.

The square root of 4135421 is about 2033.5734557670. The cubic root of 4135421 is about 160.5116563255.

The spelling of 4135421 in words is "four million, one hundred thirty-five thousand, four hundred twenty-one".