42724906019 has 4 divisors (see below), whose sum is σ = 42770897160. Its totient is φ = 42678914880.

The previous prime is 42724905989. The next prime is 42724906027. The reversal of 42724906019 is 91060942724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42724906019 is a prime.

It is a super-2 number, since 2×42724906019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42724906069) 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, 22994177 + ... + 22996034.

It is an arithmetic number, because the mean of its divisors is an integer number (10692724290).

Almost surely, 2^42724906019 is an apocalyptic number.

42724906019 is a deficient number, since it is larger than the sum of its proper divisors (45991141).

42724906019 is an equidigital number, since it uses as much as digits as its factorization.

42724906019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45991140.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 42724906019 in words is "forty-two billion, seven hundred twenty-four million, nine hundred six thousand, nineteen".