42759991922 has 18 divisors (see below), whose sum is σ = 65063136717. Its totient is φ = 21076591536.

The previous prime is 42759991921. The next prime is 42759991973. The reversal of 42759991922 is 22919995724.

It can be written as a sum of positive squares in 2 ways, for example, as 42563403481 + 196588441 = 206309^2 + 14021^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=146219.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42759991921) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 21346973 + ... + 21348975.

Almost surely, 2^42759991922 is an apocalyptic number.

42759991922 is a deficient number, since it is larger than the sum of its proper divisors (22303144795).

42759991922 is an frugal number, since it uses more digits than its factorization.

42759991922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154 (or 2078 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 59.

The spelling of 42759991922 in words is "forty-two billion, seven hundred fifty-nine million, nine hundred ninety-one thousand, nine hundred twenty-two".