438542105 has 4 divisors (see below), whose sum is σ = 526250532. Its totient is φ = 350833680.

The previous prime is 438542057. The next prime is 438542107. The reversal of 438542105 is 501245834.

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 79780624 + 358761481 = 8932^2 + 18941^2 .

It is not a de Polignac number, because 438542105 - 2⁸ = 438541849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438542107) 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, 43854206 + ... + 43854215.

It is an arithmetic number, because the mean of its divisors is an integer number (131562633).

Almost surely, 2^438542105 is an apocalyptic number.

It is an amenable number.

438542105 is a deficient number, since it is larger than the sum of its proper divisors (87708427).

438542105 is an equidigital number, since it uses as much as digits as its factorization.

438542105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87708426.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 438542105 is about 20941.3969209315. The cubic root of 438542105 is about 759.7495163688.

Adding to 438542105 its reverse (501245834), we get a palindrome (939787939).

The spelling of 438542105 in words is "four hundred thirty-eight million, five hundred forty-two thousand, one hundred five".