442555131 has 4 divisors (see below), whose sum is σ = 590073512. Its totient is φ = 295036752.

The previous prime is 442555079. The next prime is 442555147. The reversal of 442555131 is 131555244.

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

It is not a de Polignac number, because 442555131 - 2¹⁰ = 442554107 is a prime.

It is a super-2 number, since 2×442555131² = 391710087948854322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442555171) 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, 73759186 + ... + 73759191.

It is an arithmetic number, because the mean of its divisors is an integer number (147518378).

Almost surely, 2^442555131 is an apocalyptic number.

442555131 is a deficient number, since it is larger than the sum of its proper divisors (147518381).

442555131 is a wasteful number, since it uses less digits than its factorization.

442555131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147518380.

The product of its digits is 12000, while the sum is 30.

The square root of 442555131 is about 21036.9943432991. The cubic root of 442555131 is about 762.0599304618.

The spelling of 442555131 in words is "four hundred forty-two million, five hundred fifty-five thousand, one hundred thirty-one".