42581197532329 has 3 divisors (see below), whose sum is σ = 42581204057757. Its totient is φ = 42581191006902.

The previous prime is 42581197532287. The next prime is 42581197532351. The reversal of 42581197532329 is 92323579118524.

The square root of 42581197532329 is 6525427.

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

42581197532329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42581197532329 - 2⁷ = 42581197532201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42581197538329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3262714 + ... + 9788140.

It is an arithmetic number, because the mean of its divisors is an integer number (14193734685919).

Almost surely, 2^{42581197532329} is an apocalyptic number.

42581197532329 is the 6525427-th square number.

42581197532329 is the 3262714-th centered octagonal number.

It is an amenable number.

42581197532329 is a deficient number, since it is larger than the sum of its proper divisors (6525428).

42581197532329 is an frugal number, since it uses more digits than its factorization.

42581197532329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13050854 (or 6525427 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 61.

The spelling of 42581197532329 in words is "forty-two trillion, five hundred eighty-one billion, one hundred ninety-seven million, five hundred thirty-two thousand, three hundred twenty-nine".