442421043531 has 8 divisors (see below), whose sum is σ = 589897819344. Its totient is φ = 294945815040.

The previous prime is 442421043481. The next prime is 442421043541. The reversal of 442421043531 is 135340124244.

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

It is not a de Polignac number, because 442421043531 - 2¹⁰ = 442421042507 is a prime.

It is a super-2 number, since 2×442421043531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442421043492 and 442421043501.

It is not an unprimeable number, because it can be changed into a prime (442421043541) 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, 804295 + ... + 1237631.

It is an arithmetic number, because the mean of its divisors is an integer number (73737227418).

Almost surely, 2^442421043531 is an apocalyptic number.

442421043531 is a deficient number, since it is larger than the sum of its proper divisors (147476775813).

442421043531 is a wasteful number, since it uses less digits than its factorization.

442421043531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773661.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 442421043531 its reverse (135340124244), we get a palindrome (577761167775).

The spelling of 442421043531 in words is "four hundred forty-two billion, four hundred twenty-one million, forty-three thousand, five hundred thirty-one".