438042 has 16 divisors (see below), whose sum is σ = 955872. Its totient is φ = 132720.

The previous prime is 438029. The next prime is 438047. The reversal of 438042 is 240834.

It is a happy number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (438047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253 + ... + 3384.

It is an arithmetic number, because the mean of its divisors is an integer number (59742).

2⁴³⁸⁰⁴² is an apocalyptic number.

438042 is an abundant number, since it is smaller than the sum of its proper divisors (517830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438042 is a wasteful number, since it uses less digits than its factorization.

438042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 438042 is about 661.8474144393. The cubic root of 438042 is about 75.9460605262.

Adding to 438042 its reverse (240834), we get a palindrome (678876).

The spelling of 438042 in words is "four hundred thirty-eight thousand, forty-two".