42159147731 has 4 divisors (see below), whose sum is σ = 42159614112. Its totient is φ = 42158681352.

The previous prime is 42159147727. The next prime is 42159147749. The reversal of 42159147731 is 13774195124.

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 a cyclic number.

It is not a de Polignac number, because 42159147731 - 2² = 42159147727 is a prime.

It is a super-3 number, since 3×42159147731³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42159147761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49211 + ... + 294516.

It is an arithmetic number, because the mean of its divisors is an integer number (10539903528).

Almost surely, 2^42159147731 is an apocalyptic number.

42159147731 is a deficient number, since it is larger than the sum of its proper divisors (466381).

42159147731 is a wasteful number, since it uses less digits than its factorization.

42159147731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466380.

The product of its digits is 211680, while the sum is 44.

The spelling of 42159147731 in words is "forty-two billion, one hundred fifty-nine million, one hundred forty-seven thousand, seven hundred thirty-one".