42106723616 has 24 divisors (see below), whose sum is σ = 83253410604. Its totient is φ = 20963000320.

The previous prime is 42106723613. The next prime is 42106723627. The reversal of 42106723616 is 61632760124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40238755216 + 1867968400 = 200596^2 + 43220^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42106723616.

It is not an unprimeable number, because it can be changed into a prime (42106723613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816225 + ... + 2831136.

Almost surely, 2^42106723616 is an apocalyptic number.

It is an amenable number.

42106723616 is a deficient number, since it is larger than the sum of its proper divisors (41146686988).

42106723616 is a wasteful number, since it uses less digits than its factorization.

42106723616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5647604 (or 5647596 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 42106723616 in words is "forty-two billion, one hundred six million, seven hundred twenty-three thousand, six hundred sixteen".