4024381 has 4 divisors (see below), whose sum is σ = 4050172. Its totient is φ = 3998592.

The previous prime is 4024369. The next prime is 4024399. The reversal of 4024381 is 1834204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1301881 + 2722500 = 1141^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 4024381 - 2¹⁵ = 3991613 is a prime.

It is a super-2 number, since 2×4024381² = 32391284866322, which contains 22 as substring.

It is a Duffinian number.

4024381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4024781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12660 + ... + 12973.

It is an arithmetic number, because the mean of its divisors is an integer number (1012543).

Almost surely, 2^4024381 is an apocalyptic number.

It is an amenable number.

4024381 is a deficient number, since it is larger than the sum of its proper divisors (25791).

4024381 is a wasteful number, since it uses less digits than its factorization.

4024381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25790.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4024381 is about 2006.0859901809. The cubic root of 4024381 is about 159.0619723351.

Adding to 4024381 its reverse (1834204), we get a palindrome (5858585).

The spelling of 4024381 in words is "four million, twenty-four thousand, three hundred eighty-one".