442332431 has 8 divisors (see below), whose sum is σ = 444575040. Its totient is φ = 440095392.

The previous prime is 442332421. The next prime is 442332467. The reversal of 442332431 is 134233244.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442332431 is a prime.

It is a super-2 number, since 2×442332431² = 391315959028739522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442332431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442332421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303701 + ... + 305153.

It is an arithmetic number, because the mean of its divisors is an integer number (55571880).

Almost surely, 2^442332431 is an apocalyptic number.

442332431 is a deficient number, since it is larger than the sum of its proper divisors (2242609).

442332431 is a wasteful number, since it uses less digits than its factorization.

442332431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785.

The product of its digits is 6912, while the sum is 26.

The square root of 442332431 is about 21031.7006207297. The cubic root of 442332431 is about 761.9320825701.

Adding to 442332431 its reverse (134233244), we get a palindrome (576565675).

It can be divided in two parts, 44233243 and 1, that added together give a palindrome (44233244).

The spelling of 442332431 in words is "four hundred forty-two million, three hundred thirty-two thousand, four hundred thirty-one".