442105231 has 8 divisors (see below), whose sum is σ = 460056960. Its totient is φ = 424502232.

The previous prime is 442105211. The next prime is 442105253. The reversal of 442105231 is 132501244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442105231 - 2¹³ = 442097039 is a prime.

It is a super-2 number, since 2×442105231² = 390914070555126722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442105211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84595 + ... + 89668.

It is an arithmetic number, because the mean of its divisors is an integer number (57507120).

Almost surely, 2^442105231 is an apocalyptic number.

442105231 is a deficient number, since it is larger than the sum of its proper divisors (17951729).

442105231 is a wasteful number, since it uses less digits than its factorization.

442105231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174365.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 442105231 is about 21026.2985568074. The cubic root of 442105231 is about 761.8016070842.

Adding to 442105231 its reverse (132501244), we get a palindrome (574606475).

The spelling of 442105231 in words is "four hundred forty-two million, one hundred five thousand, two hundred thirty-one".