42539194562 has 54 divisors (see below), whose sum is σ = 68157881337. Its totient is φ = 19911380048.

The previous prime is 42539194561. The next prime is 42539194637. The reversal of 42539194562 is 26549193524.

It can be written as a sum of positive squares in 2 ways, for example, as 42513903721 + 25290841 = 206189^2 + 5029^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145841.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42539194562.

It is not an unprimeable number, because it can be changed into a prime (42539194561) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 397562513 + ... + 397562619.

Almost surely, 2^42539194562 is an apocalyptic number.

42539194562 is a deficient number, since it is larger than the sum of its proper divisors (25618686775).

42539194562 is an equidigital number, since it uses as much as digits as its factorization.

42539194562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 185 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 50.

Multiplying 42539194562 by its sum of digits (50), we get a square (2126959728100 = 1458410²).

The spelling of 42539194562 in words is "forty-two billion, five hundred thirty-nine million, one hundred ninety-four thousand, five hundred sixty-two".