42543123650 has 48 divisors (see below), whose sum is σ = 79494432864. Its totient is φ = 16939082880.

The previous prime is 42543123631. The next prime is 42543123673. The reversal of 42543123650 is 5632134524.

It is a self number, because there is not a number n which added to its sum of digits gives 42543123650.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 15855209 + ... + 15857891.

It is an arithmetic number, because the mean of its divisors is an integer number (1656134018).

Almost surely, 2^42543123650 is an apocalyptic number.

42543123650 is a deficient number, since it is larger than the sum of its proper divisors (36951309214).

42543123650 is a wasteful number, since it uses less digits than its factorization.

42543123650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035 (or 4030 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 42543123650 in words is "forty-two billion, five hundred forty-three million, one hundred twenty-three thousand, six hundred fifty".