442000020131 has 4 divisors (see below), whose sum is σ = 442143390072. Its totient is φ = 441856650192.

The previous prime is 442000020097. The next prime is 442000020157. The reversal of 442000020131 is 131020000244.

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

It is a cyclic number.

It is not a de Polignac number, because 442000020131 - 2⁶ = 442000020067 is a prime.

It is a super-2 number, since 2×442000020131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442000023131) 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 3 ways as a sum of consecutive naturals, for example, 71680346 + ... + 71686511.

It is an arithmetic number, because the mean of its divisors is an integer number (110535847518).

Almost surely, 2^442000020131 is an apocalyptic number.

442000020131 is a deficient number, since it is larger than the sum of its proper divisors (143369941).

442000020131 is a wasteful number, since it uses less digits than its factorization.

442000020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143369940.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 442000020131 its reverse (131020000244), we get a palindrome (573020020375).

The spelling of 442000020131 in words is "four hundred forty-two billion, twenty thousand, one hundred thirty-one".