42091816870428 has 96 divisors (see below), whose sum is σ = 106007127475200. Its totient is φ = 12922197007104.

The previous prime is 42091816870379. The next prime is 42091816870451. The reversal of 42091816870428 is 82407861819024.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1165669638 + ... + 1165705746.

It is an arithmetic number, because the mean of its divisors is an integer number (1104240911200).

Almost surely, 2^{42091816870428} is an apocalyptic number.

It is an amenable number.

42091816870428 is an abundant number, since it is smaller than the sum of its proper divisors (63915310604772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42091816870428 is a wasteful number, since it uses less digits than its factorization.

42091816870428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52731 (or 52729 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 60.

The spelling of 42091816870428 in words is "forty-two trillion, ninety-one billion, eight hundred sixteen million, eight hundred seventy thousand, four hundred twenty-eight".