42021746518 has 16 divisors (see below), whose sum is σ = 66031560000. Its totient is φ = 20029568832.

The previous prime is 42021746509. The next prime is 42021746539. The reversal of 42021746518 is 81564712024.

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 7 ways as a sum of consecutive naturals, for example, 4580943 + ... + 4590106.

It is an arithmetic number, because the mean of its divisors is an integer number (4126972500).

Almost surely, 2^42021746518 is an apocalyptic number.

42021746518 is a deficient number, since it is larger than the sum of its proper divisors (24009813482).

42021746518 is a wasteful number, since it uses less digits than its factorization.

42021746518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171159.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 42021746518 in words is "forty-two billion, twenty-one million, seven hundred forty-six thousand, five hundred eighteen".