442420131 has 8 divisors (see below), whose sum is σ = 590005440. Its totient is φ = 294890792.

The previous prime is 442420117. The next prime is 442420171. The reversal of 442420131 is 131024244.

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 442420131 - 2⁶ = 442420067 is a prime.

It is a super-3 number, since 3×442420131³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 442420098 and 442420107.

It is not an unprimeable number, because it can be changed into a prime (442420171) 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, 10660 + ... + 31598.

It is an arithmetic number, because the mean of its divisors is an integer number (73750680).

Almost surely, 2^442420131 is an apocalyptic number.

442420131 is a deficient number, since it is larger than the sum of its proper divisors (147585309).

442420131 is a wasteful number, since it uses less digits than its factorization.

442420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27985.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 442420131 is about 21033.7854652937. The cubic root of 442420131 is about 761.9824346155.

Adding to 442420131 its reverse (131024244), we get a palindrome (573444375).

The spelling of 442420131 in words is "four hundred forty-two million, four hundred twenty thousand, one hundred thirty-one".