42181054434836 has 12 divisors (see below), whose sum is σ = 74191550060628. Its totient is φ = 20983468703232.

The previous prime is 42181054434829. The next prime is 42181054434851. The reversal of 42181054434836 is 63843445018124.

It can be written as a sum of positive squares in 2 ways, for example, as 41393653764100 + 787400670736 = 6433790^2 + 887356^2 .

It is a super-3 number, since 3×42181054434836³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26764627661 + ... + 26764629236.

It is an arithmetic number, because the mean of its divisors is an integer number (6182629171719).

Almost surely, 2^{42181054434836} is an apocalyptic number.

It is an amenable number.

42181054434836 is a deficient number, since it is larger than the sum of its proper divisors (32010495625792).

42181054434836 is a wasteful number, since it uses less digits than its factorization.

42181054434836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53529257098 (or 53529257096 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 53.

The spelling of 42181054434836 in words is "forty-two trillion, one hundred eighty-one billion, fifty-four million, four hundred thirty-four thousand, eight hundred thirty-six".