442132331 has 8 divisors (see below), whose sum is σ = 454435200. Its totient is φ = 429992640.

The previous prime is 442132259. The next prime is 442132349. The reversal of 442132331 is 133231244.

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 442132331 - 2¹⁰ = 442131307 is a prime.

It is a super-2 number, since 2×442132331² = 390961996230987122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442132297 and 442132306.

It is not an unprimeable number, because it can be changed into a prime (442132391) 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, 35291 + ... + 46148.

It is an arithmetic number, because the mean of its divisors is an integer number (56804400).

Almost surely, 2^442132331 is an apocalyptic number.

442132331 is a deficient number, since it is larger than the sum of its proper divisors (12302869).

442132331 is an equidigital number, since it uses as much as digits as its factorization.

442132331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81589.

The product of its digits is 1728, while the sum is 23.

The square root of 442132331 is about 21026.9429779985. The cubic root of 442132331 is about 761.8171723089.

Adding to 442132331 its reverse (133231244), we get a palindrome (575363575).

The spelling of 442132331 in words is "four hundred forty-two million, one hundred thirty-two thousand, three hundred thirty-one".