42158005829 has 4 divisors (see below), whose sum is σ = 42243867840. Its totient is φ = 42072143820.

The previous prime is 42158005811. The next prime is 42158005867. The reversal of 42158005829 is 92850085124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42158005829 is a prime.

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 42158005829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42158005529) 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, 42930269 + ... + 42931250.

It is an arithmetic number, because the mean of its divisors is an integer number (10560966960).

Almost surely, 2^42158005829 is an apocalyptic number.

It is an amenable number.

42158005829 is a deficient number, since it is larger than the sum of its proper divisors (85862011).

42158005829 is an equidigital number, since it uses as much as digits as its factorization.

42158005829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85862010.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 42158005829 in words is "forty-two billion, one hundred fifty-eight million, five thousand, eight hundred twenty-nine".