442616131 has 4 divisors (see below), whose sum is σ = 468652392. Its totient is φ = 416579872.

The previous prime is 442616129. The next prime is 442616147. The reversal of 442616131 is 131616244.

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 442616131 - 2¹ = 442616129 is a prime.

It is a super-2 number, since 2×442616131² = 391818078842818322, which 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 442616131.

It is not an unprimeable number, because it can be changed into a prime (442616431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13018105 + ... + 13018138.

It is an arithmetic number, because the mean of its divisors is an integer number (117163098).

Almost surely, 2^442616131 is an apocalyptic number.

442616131 is a deficient number, since it is larger than the sum of its proper divisors (26036261).

442616131 is a wasteful number, since it uses less digits than its factorization.

442616131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26036260.

The product of its digits is 3456, while the sum is 28.

The square root of 442616131 is about 21038.4441202290. Note that the first 3 decimals coincide. The cubic root of 442616131 is about 762.0949419341.

The spelling of 442616131 in words is "four hundred forty-two million, six hundred sixteen thousand, one hundred thirty-one".