42147839629 has 4 divisors (see below), whose sum is σ = 48168959584. Its totient is φ = 36126719676.

The previous prime is 42147839623. The next prime is 42147839633. The reversal of 42147839629 is 92693874124.

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 not a de Polignac number, because 42147839629 - 2¹⁵ = 42147806861 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 42147839629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42147839623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010559967 + ... + 3010559980.

It is an arithmetic number, because the mean of its divisors is an integer number (12042239896).

Almost surely, 2^42147839629 is an apocalyptic number.

It is an amenable number.

42147839629 is a deficient number, since it is larger than the sum of its proper divisors (6021119955).

42147839629 is an equidigital number, since it uses as much as digits as its factorization.

42147839629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6021119954.

The product of its digits is 5225472, while the sum is 55.

The spelling of 42147839629 in words is "forty-two billion, one hundred forty-seven million, eight hundred thirty-nine thousand, six hundred twenty-nine".