442534474658 has 4 divisors (see below), whose sum is σ = 663801711990. Its totient is φ = 221267237328.

The previous prime is 442534474651. The next prime is 442534474661. The reversal of 442534474658 is 856474435244.

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

It can be written as a sum of positive squares in only one way, i.e., 435709566889 + 6824907769 = 660083^2 + 82613^2 .

It is a super-2 number, since 2×442534474658² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442534474651) 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 as a sum of consecutive naturals, namely, 110633618663 + ... + 110633618666.

Almost surely, 2^442534474658 is an apocalyptic number.

442534474658 is a deficient number, since it is larger than the sum of its proper divisors (221267237332).

442534474658 is a wasteful number, since it uses less digits than its factorization.

442534474658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221267237331.

The product of its digits is 51609600, while the sum is 56.

The spelling of 442534474658 in words is "four hundred forty-two billion, five hundred thirty-four million, four hundred seventy-four thousand, six hundred fifty-eight".