4023421 has 8 divisors (see below), whose sum is σ = 4254080. Its totient is φ = 3794688.

The previous prime is 4023401. The next prime is 4023469. The reversal of 4023421 is 1243204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4023421 - 2⁷ = 4023293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4023395 and 4023404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6685 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (531760).

Almost surely, 2^4023421 is an apocalyptic number.

It is an amenable number.

4023421 is a deficient number, since it is larger than the sum of its proper divisors (230659).

4023421 is a wasteful number, since it uses less digits than its factorization.

4023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4023421 is about 2005.8467040130. The cubic root of 4023421 is about 159.0493234634.

Adding to 4023421 its reverse (1243204), we get a palindrome (5266625).

It can be divided in two parts, 4023 and 421, that added together give a palindrome (4444).

The spelling of 4023421 in words is "four million, twenty-three thousand, four hundred twenty-one".