438242 has 16 divisors (see below), whose sum is σ = 784512. Its totient is φ = 179520.

The previous prime is 438241. The next prime is 438253. The reversal of 438242 is 242834.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (438241) 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, 359 + ... + 1002.

It is an arithmetic number, because the mean of its divisors is an integer number (49032).

2⁴³⁸²⁴² is an apocalyptic number.

438242 is a deficient number, since it is larger than the sum of its proper divisors (346270).

438242 is a wasteful number, since it uses less digits than its factorization.

438242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393.

The product of its digits is 1536, while the sum is 23.

The square root of 438242 is about 661.9984894243. The cubic root of 438242 is about 75.9576171814.

The spelling of 438242 in words is "four hundred thirty-eight thousand, two hundred forty-two".