442131525445 has 8 divisors (see below), whose sum is σ = 532759316760. Its totient is φ = 352237562880.

The previous prime is 442131525427. The next prime is 442131525449. The reversal of 442131525445 is 544525131244.

It can be written as a sum of positive squares in 4 ways, for example, as 148245020676 + 293886504769 = 385026^2 + 542113^2 .

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

It is not a de Polignac number, because 442131525445 - 2³⁵ = 407771787077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442131525398 and 442131525407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442131525449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183455860 + ... + 183458269.

It is an arithmetic number, because the mean of its divisors is an integer number (66594914595).

Almost surely, 2^442131525445 is an apocalyptic number.

It is an amenable number.

442131525445 is a deficient number, since it is larger than the sum of its proper divisors (90627791315).

442131525445 is a wasteful number, since it uses less digits than its factorization.

442131525445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366914375.

The product of its digits is 384000, while the sum is 40.

Adding to 442131525445 its reverse (544525131244), we get a palindrome (986656656689).

The spelling of 442131525445 in words is "four hundred forty-two billion, one hundred thirty-one million, five hundred twenty-five thousand, four hundred forty-five".