4032381 has 4 divisors (see below), whose sum is σ = 5376512. Its totient is φ = 2688252.

The previous prime is 4032361. The next prime is 4032401. The reversal of 4032381 is 1832304.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (4032361) and next prime (4032401).

It is not a de Polignac number, because 4032381 - 2⁶ = 4032317 is a prime.

It is a super-2 number, since 2×4032381² = 32520193058322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4032341) 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, 672061 + ... + 672066.

It is an arithmetic number, because the mean of its divisors is an integer number (1344128).

Almost surely, 2^4032381 is an apocalyptic number.

It is an amenable number.

4032381 is a deficient number, since it is larger than the sum of its proper divisors (1344131).

4032381 is a wasteful number, since it uses less digits than its factorization.

4032381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344130.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4032381 is about 2008.0789327116. The cubic root of 4032381 is about 159.1673014542.

Adding to 4032381 its reverse (1832304), we get a palindrome (5864685).

It can be divided in two parts, 40323 and 81, that added together give a palindrome (40404).

The spelling of 4032381 in words is "four million, thirty-two thousand, three hundred eighty-one".