42593942689 has 3 divisors (see below), whose sum is σ = 42594149073. Its totient is φ = 42593736306.

The previous prime is 42593942659. The next prime is 42593942707. The reversal of 42593942689 is 98624939524.

The square root of 42593942689 is 206383.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 42593942689 - 2⁹ = 42593942177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42593942659) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103192 + ... + 309574.

It is an arithmetic number, because the mean of its divisors is an integer number (14198049691).

Almost surely, 2^42593942689 is an apocalyptic number.

42593942689 is the 206383-rd square number.

42593942689 is the 103192-nd centered octagonal number.

It is an amenable number.

42593942689 is a deficient number, since it is larger than the sum of its proper divisors (206384).

42593942689 is an frugal number, since it uses more digits than its factorization.

42593942689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412766 (or 206383 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 61.

The spelling of 42593942689 in words is "forty-two billion, five hundred ninety-three million, nine hundred forty-two thousand, six hundred eighty-nine".