442112538131 has 4 divisors (see below), whose sum is σ = 482304587064. Its totient is φ = 401920489200.

The previous prime is 442112538089. The next prime is 442112538137. The reversal of 442112538131 is 131835211244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442112538131 is a prime.

It is a super-2 number, since 2×442112538131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442112538091 and 442112538100.

It is not an unprimeable number, because it can be changed into a prime (442112538137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20096024450 + ... + 20096024471.

It is an arithmetic number, because the mean of its divisors is an integer number (120576146766).

Almost surely, 2^442112538131 is an apocalyptic number.

442112538131 is a deficient number, since it is larger than the sum of its proper divisors (40192048933).

442112538131 is a wasteful number, since it uses less digits than its factorization.

442112538131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40192048932.

The product of its digits is 23040, while the sum is 35.

Adding to 442112538131 its reverse (131835211244), we get a palindrome (573947749375).

The spelling of 442112538131 in words is "four hundred forty-two billion, one hundred twelve million, five hundred thirty-eight thousand, one hundred thirty-one".