442421105131 has 4 divisors (see below), whose sum is σ = 442452388000. Its totient is φ = 442389822264.

The previous prime is 442421105111. The next prime is 442421105197. The reversal of 442421105131 is 131501124244.

It is a happy number.

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 442421105131 - 2²⁵ = 442387550699 is a prime.

It is a super-2 number, since 2×442421105131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442421105131.

It is not an unprimeable number, because it can be changed into a prime (442421105111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15620211 + ... + 15648508.

It is an arithmetic number, because the mean of its divisors is an integer number (110613097000).

Almost surely, 2^442421105131 is an apocalyptic number.

442421105131 is a deficient number, since it is larger than the sum of its proper divisors (31282869).

442421105131 is a wasteful number, since it uses less digits than its factorization.

442421105131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31282868.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 442421105131 its reverse (131501124244), we get a palindrome (573922229375).

The spelling of 442421105131 in words is "four hundred forty-two billion, four hundred twenty-one million, one hundred five thousand, one hundred thirty-one".